Yes, there is a pagan connection, but not in the way critics expect:
“Reports of Christian holidays coinciding with pagan ones are often inaccurate (Christmas does not occur on Saturnalia, for example). However, to the extent the phenomenon occurs at all, Christian holidays were introduced to provide a wholesome, non-pagan alternative celebration, which thus critiques and rejects the pagan holiday.”
catholic.com/library/is_catholicism_pagan.asp
The confrontational posture which Christianity adopted toward paganism is found behind the feast of Christmas as well. It was customary in the Hellenistic world to celebrate publicly the birthdays of important people such as emperors and princes, much as we do today with President’s Day. Christians couldn’t very well observe the birthdays of dead emperors while neglecting the risen Lord. What sort of witness would that give the unbelieving world? Not only that, but a celebration of the birth of Christ would fortify the Church against heretics like the Gnostics, who denied that Jesus was a historical, embodied personage.
The problem, though, was that the exact day of Christ’s birth was unknown, so a date on which to celebrate it had to be chosen arbitrarily. Now the pagans already had a fixed festal schedule, so any day of the year the Church chose to celebrate a feast would be a day of some pagan celebration. Here was an opportunity for the Church to confront paganism, and so it aimed at one of the biggest and most important cults in Rome. The day chosen was December 25, when everyone celebrated the pagan feast of the
dies natalis Solis Invicti, “the birthday of the Unconquerable Sun.” …
December 25 arrives around the time of the winter solstice, when the days get shorter and the sun seems to be “dying.” After the winter solstice, the sun appears to regain its strength, is “born again” as it were, as the days become longer. Consequently, December 25 was the “birthday” of the Persian sun-god known as Mithras, originally one of the lesser demigods of the Zoroastrian religion. Mithras had become the principal Persian deity by 400 B.C. and his cult quickly overran Asia Minor. According to Plutarch, it was introduced into the West around 68 B.C., and became quite popular among the Roman legions.
Unlike those of other Oriental gods introduced into the Empire, the cult of Mithras remained independent of official foundations to finance and propagate it. Its followers worshiped in small groups in subterranean shrines where the clergy employed special effects to make Mithras appear to “manifest” himself among the congregation. Such artifice, which included fireworks, special lighting and mechanical devices, rarely disappointed the religion’s adherents and provided Christian polemicists with some of their best material.
The conflict between Christianity and Mithraism had always been intense, possibly because of certain similarities between the two. The devotees of sun worship tended to be monotheistic. The cult stressed a personal experience of worship, though it excluded women. Originally, as a Zoroastrian demigod, Mithras personified justice and redemption. Later on, as part of a “mystery religion,” he came to embody all that was good which warred against evil. Mithraism had rituals that included a kind of baptism, a strong code of moral conduct, and the promise of an afterlife.
Christians, for their part, called Christ the “Sun of Righteousness” from the prophecy of the Resurrection in Malachi 4:2-3: “But for you who revere my name, the sun of righteousness will rise with healing in its wings. And you will go out and leap like calves released from the stall. Then you will trample down the wicked; they will be ashes under the soles of your feet on the day when I do these things, says the Lord Almighty.”
(This article continues here:
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