The term "Christmas" as such is not specifically mentioned in the Bible. However, the events related to the birth of Jesus Christ, which Christmas celebrates, are described in the New Testament Gospels of Matthew and Luke.

The Gospel according to Luke relates the announcement of the birth of Jesus to Mary by the angel Gabriel (Luke 1:26-38) and the account of the birth in Bethlehem (Luke 2:1-7). The passage most widely associated with the Christmas story is found in Luke 2:8-20, where the shepherds are informed of the birth of Jesus by an angel and then go to worship the newborn.

The Gospel according to Matthew also discusses the birth of Jesus, focusing on the perspective of Joseph, his adoptive father (Matthew 1:18-25), and the visit of the Magi from the East (Matthew 2:1-12).

These biblical passages describe the events surrounding the birth of Jesus, but they do not provide details of a specific annual celebration at the time. The celebration of Christmas as a liturgical feast has evolved over time in the history of the Christian Church. The choice of 25 December as the date for celebrating the birth of Jesus goes back to traditions that developed in the early centuries of the Church.

Thus, although the term "Christmas" is not mentioned in the Bible, the celebration of the birth of Jesus and the associated events are key elements of the Gospel accounts that form an important part of the Christian faith.