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Was Jesus Really Born on Dec. 25? - Christmas and Advent

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Was Jesus Really Born on Dec. 25?

  • Angie Mosteller CelebratingHolidays.com
  • 2011 12 Dec
  • COMMENTS
Was Jesus Really Born on Dec. 25?

I have long heard that our modern date for Christmas, Dec. 25, was chosen in an effort to “Christianize” a pagan holiday. Needless to say, I was surprised to learn the true history of how this date was selected.

Though the gospels of Matthew and Luke both give an account of Christ’s birth, neither one provides a date for this great event. Though it may sound strange to our modern minds, it is likely that early Christians did not place any particular value on birthdays.

It was not until the third century that various pockets of Christians began to show interest in the date of Christ’s birth, and it would take another century for the Church to begin celebrating it with some uniformity.

In regard to the chronology of Christ’s life, Early Church leaders were primarily concerned with determining the date of his death in order to establish the celebration of his resurrection (Easter). Since the Bible places Christ’s death at the time of the Jewish Passover, the dating should have been easy. However, reconciling the Jewish lunar calendar (which has 12 months of 30 days each and adds an extra “month” every third year) with Greek and Roman calendars proved to be difficult.

After much debate, the Eastern Church (which was using a Greek calendar) settled on April 6th, and the Western Church (which was using a Roman calendar) settled on March 25th as the date of Christ’s death. As we know, with time, the Western date prevailed and helped to determine the Sunday on which to celebrate Easter.

Interestingly, according to the Roman calendar, March 25th was also the spring Equinox, a day that symbolized the “rebirth of the earth” and that some Christians believed marked the first day of creation. Believers saw significance in the symbolism of Christ’s death on the anniversary of creation, since it was Christ’s redemptive death that allowed creation to be made new.

By the third century, it appears that some Christians had started celebrating Christ’s birth, as well as his death, on March 25th, because in a book called On Computing the Date of Easter, the author makes a case against this day as Christ’s birthday.

So why were Christians celebrating Christ’s birth and death on the same day? Likely, an ancient Jewish tradition of “integral age” or “whole year theory” influenced this practice. It is a belief that the life of a Jewish prophet began and ended on the same day. A third century Christian, Sextus Julius Africanus, added an interesting component to this theory. He argued that Christ’s life began not at birth but at conception. His case proves to be of particular relevance, because if Christ was conceived on March 25th, he would have been born 9 months later on December 25th, the date on which our discussion is focused.

Interestingly, the Church later recognized March 25th as the Annunciation (the date that Gabriel appeared to Mary to announce the birth of Christ and also believed to be the moment of conception (notice the pro-life implications) and December 25th as the birthday of Christ. Most Christians assume that the Annunciation was determined by taking the date of Christmas and counting back nine months. On the contrary, it was probably the reverse.

Though early Christian leaders made an effort to date Christ’s birth with thoughtful consideration, bear in mind that Jesus was born in a period when time was referred to in terms of the “reign of so-and-so” and when both nature and symbolism played a role in dating significant events. St. Jerome (340-420 AD), an early church scholar, appealed to this symbolism to defend December 25 as the date of the Nativity: “Even nature is in agreement with our claim, for the whole world itself bears witness to our statement. Up to this day, darkness increases; from this day on, it decreases; light increases, darkness decreases.”1

If the dating of Christmas was influenced at all by pagan celebrations, the most likely candidate was a holiday established in 274 AD by the Roman Emperor Aurelian (around 214-275 AD) called Dies Natalis Solis Invicti, “The Birth of the Unconquered Sun,” on December 25. However, it is equally possible that Aurelian was attempting to co-opt a date that already had significance for believers. According to history professor William Tighe, “The date had no religious significance in the Roman pagan festal calendar before Aurelian’s time, nor did the sun play a prominent role in Rome before him.”2

 By the time of Aurelian’s reign, it appears that the god Mithras (originally a Persian deity who was said to be either the son of the sun or the companion of the sun) was earning popularity among traveling Roman soldiers. Aurelian decided to seize on an opportunity to bring a monotheistic cult to the Roman Empire, and it is likely that his motivation was to compete with Christianity – a growing monotheistic religion that he saw as a threat to the empire.3

The first clear record of Christ’s birth on December 25 was not until 336 AD, but it is possible that the church had accepted the date long before and that it was already common knowledge. Regardless, even if the dating of Christ’s birth was owed in part to the pagan holiday, “The Birthday of the Unconquered Sun,” the influence was probably only secondary. It appears that the primary goal of the Church was to determine an appropriate date — one that Christians expected to be rich in symbolism. If this date, December 25, also happened to give the Church a sacred feast with which to counter pagan celebrations, then it was arguably the best possible choice for the day on which to honor Christ’s birth.

1 Witvliet, John D. and Vroege, David. Proclaiming the Christmas Gospel, Ancient Sermons and Hymns for Contemporary Christian Inspiration. Sermon by St. Jerome, Baker Books, 2004, p. 26.

2 Tighe, William. Calculating Christmas. Touchstone Journal, December 2003 issue.

3 Kelly, Joseph. The Origins of Christmas. Liturgical Press, 2004, p. 63.

The content of this article is drawn from the book Christmas, Celebrating the Christian History of Classic Symbols, Songs and Stories. Learn more about this Christmas book.

Angie Mosteller is a homeschooling mom of two and founder of Celebrating Holidays, an educational company dedicated to teaching the Christian roots of American holidays.

Visit Crosswalk's Christmas Facebook page at www.facebook.com/LuvChristmas.