4th century depiction of warring sun god Mithras
(photo by *dynamosquito* *from France)*

Our Sunday Visitor put up the following by a Roman Catholic apologist named Jimmy Akin:

Dispelling some common myths about Christmas
Every year, various myths about Christmas circulate. …
One of the most common ideas is that Christmas is based on a pagan holiday, so it’s really “pagan” in origin. 12/08/22 https://www.oursundayvisitor.com/dispelling-some-common-myths-about-christmas/

Well, it is pagan in origin. Plus December 25th was not adopted by the church of Rome until the 4th century.

The Catholic Encyclopedia teaches that:

Christmas was not among the earliest festivals of the Church … Christmas … Irenaeus and Tertullian omit it from their lists of feasts; Origen, glancing perhaps at the discreditable imperial Natalitia, asserts (in Lev. Hom. viii in Migne, P.G., XII, 495) that in the Scriptures sinners alone, not saints, celebrate their birthday; Arnobius (VII, 32 in P.L., V, 1264) can still ridicule the “birthdays” of the gods. (Martindale C. Transcribed by Susanti A. Suastika. Christmas. The Catholic Encyclopedia, Volume III. Copyright © 1908 by Robert Appleton Company. Online Edition Copyright © 2003 by K. Knight. Nihil Obstat, November 1, 1908. Remy Lafort, S.T.D., Censor. Imprimatur. +John Cardinal Farley, Archbishop of New York).

The above is true.

The World Book Encyclopedia notes:

In 354 A.D., Bishop Liberius of Rome ordered the people to celebrate on December 25. He probably chose this date because the people of Rome already observed it as the Feast of Saturn, celebrating the birthday of the sun (Sechrist E.H. Christmas. World Book Encyclopedia, Volume 3. Field Enterprises Educational Corporation, Chicago, 1966, pp. 408-417).

It needs to be understood that some scholarly sources believe that the celebration in Rome of Christmas may have began a couple of decades earlier (by Constantine), but none I am aware of suggest it was prior Constantine in the fourth century.

Jimmy Akin further wrote:

It’s sometimes claimed that Jesus couldn’t have been born on Dec. 25 because Luke reports that shepherds were tending their flocks the night Jesus was born (cf. 2:8). It would have been too cold for that in December, so Jesus must have been born in a warmer time of year.

This is nonsense.

Well, according to The Catholic Encyclopedia that is not nonsense as it states:

Authorities moreover differ as to whether shepherds could or would keep flocks exposed during the nights of the rainy season. (Martindale, Christmas)

While it is not impossible for shepherds to be in the field at night in late December, that was not their ancient practice. Normally, shepherds stopped spending the night with their flocks outside during the Fall because of cold and rain. The Catholic Encyclopedia seems to recognize this.

Jimmy Akin further wrote:

What about the claim that celebrating Christmas on Dec. 25 is based on a pagan holiday?
Even if that were true, so what?

So what? The Bible opposes pagan practices.

Notice something that Nehemiah declared:

30 I cleansed them of everything pagan (Nehemiah 13:30)

Christians should follow Nehemiah’s example and not participate in pagan practices.

Jesus taught (note: scriptures in this post from here on were translated by Roman Catholic scholars):

24 God is spirit, and those who worship must worship in spirit and truth. (John 4:24, NJB)

7 And in vain to they worship me, teaching doctrines and precepts of men. (Mark 7:7, DRB)

Of course, it is vain and bearing false witness to deceive children about Santa Claus.

There is a right way and a wrong way to live and worship God–do not base this on your emotional feelings about what is right:

8 ‘You must not behave as we are behaving here today, each of you doing what he himself sees fit, (Deuteronomy 12:8, NJB)
29 ‘When Yahweh your God has annihilated the nations confronting you, whom you are going to dispossess, and when you have dispossessed them and made your home in their country,
30 beware of being entrapped into copying them, after they have been destroyed to make way for you, and do not enquire about their gods, saying, “How did these nations worship their gods? I am going to do the same too.”
31 This is not the way to treat Yahweh your God. For in honour of their gods they have done everything detestable that Yahweh hates; (Deuteronomy 12:29-31a, NJB)
32 What I command thee, that only do thou to the Lord: neither add any thing, nor diminish. (Deuteronomy 12:32, DRB)

God did not command keeping Christmas: pagans came up with it.

Consider something that the Apostle Paul wrote:

17 So this I say to you and attest to you in the Lord, do not go on living the empty-headed life that the gentiles live. 18 Intellectually they are in the dark, and they are estranged from the life of God, because of the ignorance which is the consequence of closed minds. 19 Their sense of right and wrong once dulled, they have abandoned all self-control and pursue to excess every kind of uncleanness.
20 Now that is hardly the way you have learnt Christ, 21 unless you failed to hear him properly when you were taught what the truth is in Jesus. 22 You were to put aside your old self, which belongs to your old way of life and is corrupted by following illusory desires. (Ephesians 4:17-22, NJB)

Christians are to put off pagan ways, and live according to the truth, not longing for improper traditions.

The Apostle Paul further wrote:

19 What then? Do I say, that what is offered in sacrifice to idols, is any thing ? Or, that the idol is any thing?
20 But the things which the heathens sacrifice, they sacrifice to devils, and not to God. And I would not that you should be made partakers with devils.
21 You cannot drink the chalice of the Lord, and the chalice of devils: you cannot be partakers of the table of the Lord, and of the table of devils. (1 Corinthians 10:19-21, DRB)

To further answer Jimmy Akin’s “so what?,” the Bible says we are not to adopt pagan practices, which the Apostle Paul says are from devils.

Jimmy Akin further wrote:

Some sources link Christmas with the Roman holiday Saturnalia, which was a festival in honor of the god Saturn. …
But there is a major problem claiming that Christmas is an alternative to Saturnalia. This Roman festival was originally celebrated Dec. 17, though by the time of the Republic it extended through Dec. 23. So, Christmas wasn’t held until after Saturnalia was over.

First, consider that there are normally many Christmas parties before December 25th.

Second, consider that many customs of Saturnalia are part of Christmas celebrations.

And third, notice something from a then Roman Catholic scholar named Tertullian in the early 3rd century:

The Minervalia are as much Minerva’s, as the Saturnalia Saturn’s; Saturn’s, which must necessarily be celebrated even by little slaves at the time of the Saturnalia. New-year’s gifts likewise must be caught at, and the Septimontium kept; and all the presents of Midwinter and the feast of Dear Kinsmanship must be exacted; the schools must be wreathed with flowers; the flamens’ wives and the aediles sacrifice; the school is honoured on the appointed holy-days. The same thing takes place on an idol’s birthday; every pomp of the devil is frequented. Who will think that these things are befitting to a Christian master, unless it be he who shall think them suitable likewise to one who is not a master? (Tertullian. On Idolatry, Chapter X. Translated by S. Thelwall. Excerpted from Ante-Nicene Fathers, Volume 3. Edited by Alexander Roberts and James Donaldson. American Edition, 1885. Online Edition Copyright © 2004 by K. Knight).

Around the time of Tertullian, the Roman Bishops Zephyrinus (199-217) and Callistus (217-222) had a reputation of compromise and corruption (and this is confirmed by such Roman Catholic saints such as Hippolytus) and allowed people in their church that compromised with paganism, etc.

So, notice what else Tertullian wrote:

But, however, the majority {of Greco-Roman ‘Christians} have by this time induced the belief in their mind that it is pardonable if at any time they do what the heathen do, for fear “the Name be blasphemed”…To live with heathens is lawful, to die with them is not. Let us live with all; let us be glad with them, out of community of nature, not of superstition. We are peers in soul, not in discipline; fellow-possessors of the world, not of error. But if we have no right of communion in matters of this kind with strangers, how far more wicked to celebrate them among brethren! Who can maintain or defend this?…By us, … the Saturnalia and New-year’s and Midwinter’s festivals and Matronalia are frequented–presents come and go–New-year’s gifts–games join their noise–banquets join their din! Oh better fidelity of the nations to their own sect, which claims no solemnity of the Christians for itself!…Not the Lord’s day, not Pentecost, even it they had known them, would they have shared with us; for they would fear lest they should seem to be Christians. We are not apprehensive lest we seem to be heathens! (Tertullian. On Idolatry, Chapter XIV. Translated by S. Thelwall. Excerpted from Ante-Nicene Fathers, Volume 3. Edited by Alexander Roberts and James Donaldson. American Edition, 1885. Online Edition Copyright © 2004 by K. Knight).

The scripture Tertullian seems to be referring to is 1 Timothy 6:1:

1 Whosoever are servants under the yoke, let them count their masters worthy of all honour; lest the name of the Lord and his doctrine be blasphemed. DRB

But, as even he alluded to, that should not have been an excuse to celebrate pagan days. Notice that it would be false teachers that would get the way of truth blasphemed:

1 But there were also false prophets among the people, even as there shall be among you lying teachers, who shall bring in sects of perdition, and deny the Lord who bought them: bringing upon themselves swift destruction. 2 And many shall follow their riotousnesses, through whom the way of truth shall be evil spoken of. 3 And through covetousness shall they with feigned words make merchandise of you. Whose judgment now of a long time lingereth not, and their perdition slumbereth not. (2 Peter 2:1-3, DRB)

So, following covetous, false teachings, is really what causes the way of truth to be blasphemed.

Getting back to Tertullian, he wrote:

But “let your works shine,” saith He; but now all our shops and gates shine! You will now-a-days find more doors of heathens without lamps and laurel-wreaths than of Christians. What does the case seem to be with regard to that species (of ceremony) also? If it is an idol’s honour, without doubt an idol’s honour is idolatry. If it is for a man’s sake, let us again consider that all idolatry is for man’s sake; let us again consider that all idolatry is a worship done to men, since it is generally agreed even among their worshippers that aforetime the gods themselves of the nations were men; and so it makes no difference whether that superstitious homage be rendered to me of a former age or of this. Idolatry is condemned, not on account of the persons which are set up for worship, but on account of those its observances, which pertain to demons (Tertullian. On Idolatry, Chapter XV. Translated by S. Thelwall. Excerpted from Ante-Nicene Fathers, Volume 3. Edited by Alexander Roberts and James Donaldson. American Edition, 1885. Online Edition Copyright © 2004 by K. Knight).

What Tertullian seems to be saying is that observing mid-winter celebrations make Christians appear to be followers of pagan gods–even more so than the pagans themselves–and since the pagans would not intentionally celebrate days considered by many to be Christian, Christians should not celebrate days that are honored by the heathen. Specifically, he felt that those who profess Christ should not celebrate Saturnalia, New Year’s, or other pagan days, as even the observance is a form of idolatry (click here for an article titled Is January 1st a Date for Christians Celebrate?).

Notice that he was also pointing out that his ‘Christians’ even used laurel wreaths and lights more than the heathen. Even The Catholic Encyclopedia says of them that they have pre-Christian origin, that Tertullian considered them pagan.

Notice that they were in widespread use, however, by the time of the late 4th century Bishop of Consantinople, John Chrysostom:

A wreath of flowers or evergreens formerly used in connection with baptismal, nuptial, and funeral rites, as well as in solemn processions.
The bridal crown or wreath is said to be of pre-Christian Greek origin, adopted later by the Romans. Tertullian refers to it as a sign of paganism, but this prejudice was afterwards set aside, and it was in common use among Christians by the time of St. John Chrysostom … (Alston, George Cyprian. “Garland.” The Catholic Encyclopedia. Vol. 6. New York: Robert Appleton Company, 1909).

Notice also the following:

Roman ‘Christmases’ were similar to ours
The Romans celebrated the winter festival of Sigillaria on 23rd of December, part of their Saturnalia festivities. Just like on Christmas Day, Sigillaria saw presents exchanged.
Saturnalia began in the very early history of Rome. It was a festival devoted to the god Saturn … The popularity of Saturnalia continued into the 3rd and 4th centuries until it was supplanted by the Christian festival of Christmas …
“Just like our festive season, it seems that the whole of Rome geared up early for Sigillaria. Seneca noted: ‘It is now the month of December, when the greatest part of the city is in a bustle. Loose reins are given to public dissipation; everywhere you may hear the sound of great preparations’. (Ep. 18.1).” (Roman ‘Christmases’ were similar to ours. December 23, 2013 http://phys.org/news/2013-12-roman-christmases-similar.html viewed 12/30/13)

Since the modern Christmas celebration is at the same time as the old Gentile Saturnalia holiday (and with many of the same elements, like wreaths and gift-giving), it is clear that Tertullian is condemning these practices by stating that those that keep it are of the pagan god Saturn.

Tertullian also wrote against winter giving:

… gifts like those you have in the Saturnalia! (Tertullian. De Fuga in Persecutione, Chapter 13. Excerpted from Ante-Nicene Fathers, Volume 4. Edited by Alexander Roberts & James Donaldson. American Edition, 1885. Online Edition Copyright © 2004 by K. Knight).

So basically, those who teach “Jesus is the reason for the season” are in error. Those who professed Christ and observed these pagan holidays did not attempt to pretend that they were celebrating “Christmas” then (that term was not developed until centuries later). The initial reason for the season appears to be that many of those who somewhat professed Christ wanted to have a party. And they did not care if the party was related to pagan gods.

It is interesting to note that Tertullian objected to keeping a celebration lasting until the Roman New Years, putting up wreaths, and giving gifts. Since most of these quotes come from his writing titles “On Idolatry” apparently he considered those practices as idolatrous.

It seems to me that no true Christians would do this, only those who were somewhat nominal, but who had been accepted, to some degree, by part of the Greco-Roman confederation. Tertullian’s complaints apparently did not stop this from happening, though his objections certainly have biblical support.

Notice something that John Chrysostom wrote in the fourth century condemning paganism:

And what, pray you, is that Minerva of theirs, and Apollo, and Juno? They are different kinds of demons among them. (Chrysostom J. The homilies of S. John Chrysostom, Archbishop of Constantinople: on the Acts of the Apostles, Volume 1, Homily IV. John Henry Parker, 1851. Original from Harvard University. Digitized, Apr 12, 2008, p. 66)

Notice that, like Tertullian, John Chrysostom associated paganism with demons.

Yet, ‘venerable’ Cesare Baronius, a Roman Catholic of the 16th century, wrote:

If the candles which were formerly distributed at the Saturnalia are now identified with the feast of the Purification of our Lady? What, I ask, is there so surprising if holy bishops have allowed certain customs firmly rooted among pagan peoples, and so tenaciously adhered to by them that even after their conversion to Christianity they could not be induced to surrender them, to be transferred to the worship of the true God?” (Baronius, “Annales”, ad ann. 58, n. 77). (as cited in Thurston, Herbert. “Lights.” The Catholic Encyclopedia. Vol. 9. Nihil Obstat.October 1, 1910. Remy Lafort, Censor. Imprimatur. +John M. Farley, Archbishop of New York. New York: Robert Appleton Company, 1910.21 Dec. 2009 <http://www.newadvent.org/cathen/09244b.htm>)

Thus, Baronius seems to be saying that Saturnalia lights are a pagan practice, yet using them is acceptable.

But even the Rheims‘ version of the New Testament (a Catholic approved translation) states the following:

15. And what agreement with Christ and Belial? or what part hath the faithful with the infidel? 16. And what agreement hath the temple of God with Idols? For you are the temple of the living God. as God saith, Then I will dwell, and walk in them, and will be their God: and they shall be my people. 17. For the which cause, Go out of the midst of them, and separate yourselves. saith our Lord, and touch not the unclean: and I will receive you (2 Corinthians 6:15-17, The Original And True Rheims New Testament Of Anno Domini 1582. Prepared and Edited by Dr. William von Peters, Ph.D. Copyright © 1998, Dr. William G. von Peters. Ph.D. 2004, copyright assigned to VSC Corp.).

So unclean practices associated with idols are prohibited by God. Does not that include celebrating as the idolaters celebrate?

The Roman Saturnalia and the Persian Mithraism themselves were adaptations of an even earlier pagan religion – that of the ancient Babylonian mystery cult. The ancient Babylonians celebrated the reborn Nimrod as the newborn Tammuz by worshipping an evergreen tree. The Babylonians also celebrated this rebirth during the season of the winter solstice. Jeremiah condemns ancient Israel for copying this type of paganism, and and condemned the the pagan use of trees in Jeremiah 10:2-4 and the evergreen tree in Jeremiah 3:13.

To take this a step further, notice that using trees as part of worship was condemned by God thousands of years ago:

2 ‘You must completely destroy all the places where the nations you dispossess have served their gods, on high mountains, on hills, under any spreading tree; 3 you must tear down their altars, smash their sacred stones, burn their sacred poles, hack to bits the statues of their gods and obliterate their name from that place. (Deuteronomy 12:2-3, New Jerusalem Bible, NJB, a Catholic translation)
2 Destroy all the places in which the nations, that you shall possess, worshipped their gods upon high mountains, and hills, and under every shady tree: 3 Overthrow their altars, and break down their statues, burn their groves with fire, and break their idols in pieces: destroy their names out of those places. 4 You shall not do so to the Lord your God (Deuteronomy 12:2-4, Douay OT, DOT, a Catholic translation).
16 Beware lest perhaps your heart be deceived, and you depart from our Lord, and serve strange Gods, and adore them (Deuteronomy 11:16, DOT).
9 When thou art come into the land which the Lord thy God shall give thee, beware lest thou have a mind to imitate the abominations of those nations…12 For the Lord abhorreth all these things, and for these abominations he will destroy them at thy coming. (Deuteronomy 18:9,12, DOT)

Roman Catholic translations of the Bible show that spreading shady trees, like evergreens, were not to be part of the worship of the true God–and that people should not be deceived and serve such strange practice or other pagan practices. The truth is that Christmas reminds us that people are often unwilling to worship God as He intended, but instead often prefer pagan substitutes that they rationalize as somehow acceptable if they pretend the holiday is about Jesus.

Those who truly believe Jesus’ words, “Human beings live not on bread alone but on every word that comes from the mouth of God” (Matthew 4:4, NJB) will not celebrate a compromised pagan holiday such as Christmas because it contains practices and symbols (see also What Did the Early Church Teach About Idols and Icons?) warned against in the Bible and was never enjoined upon true believers to practice.

Apparently the practice of ‘Christmas caroling’ also has its origins in Saturnalia:

In ancient Babylon, the feast of the Son of Isis (Goddess of Nature) was celebrated on December 25. Raucous partying, gluttonous eating and drinking, and gift-giving were traditions of this feast.
In Rome, the Winter Solstice was celebrated many years before the birth of Christ. The Romans called their winter holiday Saturnalia, honoring Saturn, the God of Agriculture. In January, they observed the Kalends of January, which represented the triumph of life over death. This whole season was called Dies Natalis Invicti Solis, the Birthday of the Unconquered Sun. The festival season was marked by much merrymaking. It is in ancient Rome that the tradition of the Mummers was born. The Mummers were groups of costumed singers and dancers who traveled from house to house entertaining their neighbors. From this, the Christmas tradition of caroling was born. In northern Europe, many other traditions that we now consider part of Christian worship were begun long before the participants had ever heard of Christ. The pagans of northern Europe celebrated the their own winter solstice, known as Yule. Yule was symbolic of the pagan Sun God, Mithras, being born … http://www.essortment.com/christmas-pagan-origins-42543.html

Many practices that people associate with Christmas came from pagan holidays. (For more on Mummers, please see Canadian & Philadelphian Mummers Parades: Another tie to Saturnalia.)

The “twelve days of Christmas” originally came from the 12 days of Yuletide which began at sunset on December 20, known as Mother Night, and ended on the night of December 31, the Night of the Oak King and the Roman day of Hecate. The dates were later moved by those who keep Christmas.

Yuletide is perhaps the greatest of all Heathen holidays. It is a time of celebration and close family contact that lasts twelve days and nights; each of which can be viewed as a month of the preceding year in miniature. Many of the customs associated with Christmas actually began from Heathen Yule rites and customs. Many Gods and Goddesses are honored during Yuletide and most Asatruar believe that they, as well as the spirits of the earth and our ancestors, all join us for the celebrations. All are our kith and kin, after all.
There are many traditions and practices that are traditional to the month of Yule the most well known is of course the 12 days of Yule. Some Heathens may simply bookend Yule with Mother’s Night and Twelfth Night and not have specific observances in-between those days, there are some other Heathens who have taken things a step further. Pulling inspiration from the Nine Noble Virtues, and combining it with candle-lighting celebrations like Chanukah or Kwanzaa, they have come up with a reason to light a candle every night during the Yuletide.
The alter {sic} on Yule should face north, the area is decorated with Holly and Mistletoe and dried leaves and fruit such as Hips and Haw. A chalice of appropriate wine, mead or cider. The Oak or Pine log with up to 13 green, white and red candles decorated with carvings, runes or symbols is placed centrally on the altar. (12 Nights of Yule. Nordic Wiccan, December 5, 2014. http://nordicwiccan.blogspot.com/2014/12/12-days-of-yule.html)

Faithful early Christians were not keeping the twelve days of Yuletide–MANY OF WHICH PRACTICED COINCIDED WITH SATURNALIA.

Jimmy Akin further wrote:

Today, many authors link Christmas with the birthday of Sol Invictus — that is, the sun god Sol, who was nicknamed Invictus or “the Unconquerable.” This was celebrated on Dec. 25.
But we have no early Christian sources saying, “We decided to celebrate Christmas on Dec. 25 to compete with Sol Invictus.” That means that the idea is sheer speculation, not something that we have evidence for.
It’s not even good speculation, because the only thing the two celebrations have in common is the date, but that doesn’t mean one is based on the other.

First it needs to be understood that Sol Invictus is Mithra–the sun god worshiped by Emperor Constanine.

Roman Mithras is the invincible sun-god, Sol Invictus. This is the burden, repeated a hundred times over, of the votive inscriptions from the second to the fourth centuries AD, whether in the form Sol Invictus Mithras, or Deus Sol Invictus Mithras, or Deus Sol Mithras, or Sol Mithras. There do not seem to be any significant regional or temporal variations among such formulae. In the very earliest epigraphic evidence for the Roman cult of Mithras, the god is already invoked as Sol Invictus Mithras. These facts are confirmed by the numerous votive offerings to Sol, Deus Sol, Sol Invictus, and Deus Invictus Sol which were put up in mithraea. (Clauss M. The Roman cult of Mithras. Taylor and Francis, 2017, p. 117)

Many Roman Catholic authors rightly connect Sol Invictus–Mithra–with Christmas being December 25th.

Notice the following from The Catholic Encyclopedia:

Constantine the Great… Constantine can rightfully claim the title of Great, for he turned the history of the world into a new course and made Christianity…the religion of the State… it is easy to understand that many of the emperors yielded to the delusion that they could unite all their subjects in the adoration of the one sun-god who combined in himself the Father-God of the Christians and the much-worshipped Mithras; thus the empire could be founded anew on unity of religion. Even Constantine…cherished this mistaken belief… Could not Sol Deus Invictus, to whom even Constantine dedicated his coins for a long time, or Sol Mithras Deus Invictus, venerated by Diocletian and Galerius, become the supreme god of the empire? Constantine may have pondered over this. Nor had he absolutely rejected the thought even after a miraculous event had strongly influenced him in favour of the God of the Christians… It is true that the believers in Mithras also observed Sunday as well as Christmas. Consequently Constantine speaks not of the day of the Lord, but of the everlasting day of the sun. (Herbermann C., Georg Gp. Constantine the Great. The Catholic Encyclopedia. Vol. 4. Nihil Obstat. Remy Lafort, Censor. Imprimatur. +John M. Farley, Archbishop of New York. New York: Robert Appleton Company, 1908).
Mithraism A pagan religion consisting mainly of the cult of the ancient Indo-Iranian Sun-god Mithra. It entered Europe from Asia Minor after Alexander’s conquest, spread rapidly over the whole Roman Empire at the beginning of our era, reached its zenith during the third century, and vanished under the repressive regulations of Theodosius at the end of the fourth century…Helios Mithras is one god…Sunday was kept holy in honour of Mithra, and the sixteenth of each month was sacred to him as mediator. The 25 December was observed as his birthday, the natalis invicti, the rebirth of the winter-sun, unconquered by the rigours of the season (Arendzen J. Mithraism. The Catholic Encyclopedia, Volume X. Nihil Obstat, October 1, 1911. Remy Lafort, S.T.D., Censor. Imprimatur. +John Cardinal Farley, Archbishop of New York. New York: Robert Appleton Company, 1911).

The birthday of the sun god Mithras was what Constantine observed and he wanted his followers to observe. And it ended up getting officially adopted by the Greco-Roman bishops.

Emperor Constantine became a highly devout follower of the sun-god after he said he saw an apparition of the sun god Sol in a grove of Apollo in Gaul in 310 (discussed in Rodgers, Barbara S. “Constantine’s Pagan Vision,”Byzantion, vol. 50, 1980, pp. 259–78). He also observed the sun-god Mithras’ birthday on December 25th. He also seems to be have instrumental in getting the Greco-Romans to celebrate December 25th as Jesus’ birthday:

The first recorded date of Christmas being celebrated on December 25th was in 336AD, during the time of the Roman Emperor Constantine (he was the first Christian Roman Emperor). A few years later, Pope Julius I officially declared that the birth of Jesus would be celebrated on the 25th December. (Why is Christmas Day on the 25th December? http://www.whychristmas.com/customs/25th.shtml accessed 12/07/15)
The eventual choice of December 25, made perhaps as early as 273, reflects a convergence of Origen’s concern about pagan gods and the church’s identification of God’s son with the celestial sun. December 25 already hosted two other related festivals: natalis solis invicti (the Roman “birth of the unconquered sun”), and the birthday of Mithras, the Iranian “Sun of Righteousness” whose worship was popular with Roman soldiers. The winter solstice, another celebration of the sun, fell just a few days earlier. Seeing that pagans were already exalting deities with some parallels to the true deity, church leaders decided to commandeer the date and introduce a new festival.
Western Christians first celebrated Christmas on December 25 in 336, after Emperor Constantine had declared Christianity the empire’s favored religion. (Coffman E. Why December 25? For the church’s first three centuries, Christmas wasn’t in December—or on the calendar at all. Christianity Today, August 8, 2008. http://www.christianitytoday.com/ch/news/2000/dec08.html accessed 12/07/15)

The sun-god worshiping Emperor Constantine succeeded in getting the Greco-Romans, over time, to mainly agree with his date–the date of the rebirth of the sun-god Mithras.

Jimmy Akin wrote:

Could the fact that Dec. 25 was the winter solstice have played a role in their celebrating it as Jesus’ birth?

Yes. While Jimmy Akin elsewhere also tries to point to December 25th as having a pre-Sol Invictus origin, the reality is that December 25th was previously also tied to pagan solstice observations.

Jimmy Akin further wrote:

The calculation theory
The easiest date in Jesus’ life to calculate is the day of his death …
Just as Dec. 25 was the winter solstice, March 25 — three months later — was the spring equinox, and the timing of Passover was determined by the spring equinox.
Knowing that Jesus was crucified at Passover, it was easy for ancients to conclude he died around March 25, and that became the standard date.

Let me state that Jimmy Akin does not know the date of Jesus’ death–more on that can be found in the article What Happened in the ‘Crucifixion Week’?

As far as December 25th goes, The Catholic Encyclopedia states:

The Gospels. Concerning the date of Christ’s birth the Gospels give no help; upon their data contradictory arguments are based. The census would have been impossible in winter: a whole population could not then be put in motion…
Natalis Invicti. The well-known solar feast, however, of Natalis Invicti, celebrated on 25 December, has a strong claim on the responsibility for our December date. For the history of the solar cult, its position in the Roman Empire, and syncretism with Mithraism, see Cumont’s epoch-making “Textes et Monuments” etc., I, ii, 4, 6, p. 355…The earliest rapprochement of the births of Christ and the sun is in Cypr., “De pasch. Comp.”, xix, “O quam præclare providentia ut illo die quo natus est Sol . . . nasceretur Christus.” – “O, how wonderfully acted Providence that on that day on which that Sun was born . . . Christ should be born.”

Since the census WAS IMPOSSIBLE THEN, December 25th is not possibly the date Jesus was born.

Jimmy Akin further wrote:

Looking at the Gospels
While the calendar date of Jesus’ birth is something we cannot know definitively, the Gospels present us with solid information about the Nativity. …
Since Joseph’s family was from Bethlehem, he and Mary were likely staying with family. But it is also possible that there were so many family members visiting for Caesar’s enrollment (cf. Lk 2:1) that the living area was full, and so Mary chose to give birth in another part of the house.
Family rooms were on an upper floor, so Mary would have gone to the lower part of the house, which is where animals were kept, as indicated by the presence of the manger.
What kind of animals were they? We cannot say, though cows, sheep, and goats were commonly kept. In any event, Jesus was likely born in the lower part of a house, and — most likely — in a cave.

Mithra was allegedly born in a below-ground cave, and many (contrary to logic) claim that Jesus was born in a cave–but He was not. For details, see Was Jesus Born in the Grotto of the Nativity?

Jimmy Akin further wrote:

Conclusion
There are a large number of myths about Christmas.

Yes, there are many myths. But sadly, Jimmy Akin was attempting to perpetuate many.

Jesus was not born on December 25th, early Christians did not celebrate Christmas or even birthdays.

Faithful early Christians attempted to remain separate from pagan observances.

True Christians do so until this day.

Christmas is NOT a biblical nor truly a Christ-centered holiday. It is a sentimental and commercialized, pagan tradition.

And those, plus some others are in a related sermonette:

14:54
22 Points to Consider About Christmas

Christmas is a distraction from the Gospel of the Kingdom of God. It is not a Christ-centered holiday as its proponents sometimes claim.

Christmas has the wrong emphasis and is not based on truth.

The foundation of Christmas is demonic paganism and lies.

Consider something else that Jesus had recorded:

14 Blessed are those who do His commandments, that they may have the right to the tree of life, and may enter through the gates into the city. 15 But outside are dogs and sorcerers and sexually immoral and murderers and idolaters, and whoever loves and practices a lie. (Revelation 22:14-15)

Which are you?

One who keeps God’s commandments or one who prefers to practice the idolatrous lie of Christmas?

Should You Keep God’s Holy Days or Demonic Holidays?

Again, here is a link to our short video: 22 Points to Consider About Christmas.

25 Reasons to Not Keep Christmas

Should You Keep God’s Holy Days or Demonic Holidays?

Fall Holy Days or Holidays?

The Ten Commandments: The Decalogue, Christianity, and the Beast

The Ten Commandments & The Beast of Revelation

The Second Commandment, Idols, and Icons

"Beliefs of the Original Catholic Church"

Sermon Series related to the free online book above: