The question “Is it true that December 25 is not Jesus’ birthday?” often arises because of two things: the Bible never gives a date, while churches in many places celebrate Christmas on December 25. So, what is the honest conclusion?
The safest and most biblical conclusion is this: December 25 is not a date that can be confirmed from the Bible, but it is a liturgical date used by the church throughout history to celebrate the birth of Christ. The uncertainty of the date does not diminish the truth of the event: The Word truly became flesh (John 1:14).
What the Bible Says and Does Not Say
The Gospels place Jesus’ birth in a real historical context. Luke mentions the reign of Emperor Augustus and the event of the census, then tells of Jesus’ birth in Bethlehem (Luke 2:1-7). But importantly noted: there is no verse that mentions the “date and month” of Jesus’ birth.
This is not a coincidence. The Bible emphasizes more the theological meaning and mission of His coming: “when the time had fully come, God sent forth His Son” (Galatians 4:4). The focus is on the Person and His work, not calendar numbers. Therefore, when people say “December 25 is definitely wrong,” it is often true in the sense of “cannot be proven from the Bible.” However, when people say “Christmas is a lie because the date is uncertain,” that is wrong, because what is celebrated is the reality of the incarnation, not the certainty of the day.
Earliest Historical Data: December 25 Recorded as a Feast Day
If the Bible does not give a date, where does December 25 come from? One piece of historical data often considered important is a Roman calendar document known as the Chronograph of 354. In the section listing commemorations, there is a famous Latin line: “VIII kal. Ian. natus Christus in Betleem Iudeae” which means the birth of Christ in Bethlehem, eight days before the Kalends of January, that is December 25.
This record does not automatically prove Jesus was born on December 25. But the record shows something strong: by the mid-4th century, there was a Christian community in Rome that had already marked December 25 as the celebration of Christ’s birth.
Why Was December 25 Chosen? Two Commonly Discussed Explanations
In church history, there are two major explanations often presented, and both do not have to be opposed as if only one is possible.
The first is the “theological calculation” route. In ancient tradition, some Christians associated the day of Jesus’ incarnation or conception with a certain time, then counted nine months toward the birth. In academic discussions about Hippolytus of Rome, for example, there is an argument that he placed Jesus’ birth on December 25 around the 3rd century, related to the method of calculation in his chronological works.
The second is the “winter cultural context” route. The Roman world had moments of celebration in the late December period, including symbols of light and the “birth of the sun” in their language. Some historians see the possibility that the church affirmed Christ as the true Light amid a world full of “light” symbols in cultural versions. This aligns theologically with Jesus’ identity as the light of the world (John 8:12), but must still be distinguished: Christ was not borrowed from culture; rather, Christ is revealed as the true fulfillment.
In practice, these two routes often blend: there is an element of internal church calculation, and there is also a social context that made a certain date easier to use as a shared celebration moment.
Is December 25 “Definitely” Imitating a Pagan Festival?
This part needs to be answered calmly. Indeed, there is a festival associated with Sol Invictus (Invincible Sun). Many discussions mention Emperor Aurelian linking the celebration of “Dies Natalis Solis Invicti” on December 25 around the 3rd century.
However, from a historical perspective, this does not automatically mean “Christmas is a pagan festival with a changed name.” It is more fair to say: in the Roman calendar, that period indeed contained winter celebrations, and the church then used December 25 as the liturgical date for Christmas. There is academic debate about which was more dominant, internal calculation or reaction to the public calendar. So, the wise approach is: avoid too easy conclusions as if everything directly originates from paganism. What is more important is how the church understands the celebration: whether Christ is truly the center, or merely going along with cultural trends.
Why Do Some Celebrate on January 6 or January 7?
This is also a part of history that is often misunderstood. In some Eastern traditions, the celebration of Theophany or Epiphany (the appearance of God) is closely related to the events of the incarnation and baptism. The Armenian tradition, for example, still celebrates the birth of Christ on January 6 as both Nativity and Theophany.
Meanwhile, the “January 7” often heard in some Orthodox churches is not because they believe Jesus was born on January 7, but because of calendar differences. Some use the Julyan calendar for church dating, so December 25 according to the Julyan calendar falls on January 7 in the widely used civil Gregorian calendar today.
Therefore, the existence of December 25, January 6, or January 7 should not be used as a weapon to belittle one another. It more reflects the historical journey of liturgy and calendars, not differences about who Jesus is.
Is It Wrong to Celebrate Christmas on December 25?
Within the framework of the New Testament, this falls within the realm of freedom bounded by love. Paul says, “One person considers one day more important than another… another considers every day alike… whoever celebrates a special day does so for the Lord” (Romans 14:5-6). He also reminds believers not to judge one another regarding festivals and food (Colossians 2:16).
This means someone may say: “I am not sure December 25 is Jesus’ birth date.” That is true. But if it continues with: “Therefore, those who celebrate Christmas are surely heretics,” that goes beyond the Bible. What God looks at is whether the heart glorifies Christ or not.
The Healthiest Attitude: Christ at the Center, the Calendar in Its Place
If you want to be steadfast and remain peaceful, hold these two truths together.
First, be historically honest: we do not have an exact date from the Bible, and December 25 is a choice made by church tradition throughout history.
Second, be theologically firm: the most important thing is the reality of the incarnation. “The Word became flesh” (John 1:14). Christmas is a celebration that God entered history, humbled Himself, and came to save (Matthew 1:21). The calendar helps us remember, but the one who saves is Christ, not the exact date.
Ultimately, the more piercing question is not “On what date was He born,” but “Has He truly become my Lord and Savior?” When that is answered with faith, then the Christmas celebration, whenever it is held, becomes an opportunity to worship, give thanks, and live in love.
