A Christian holiday celebrating the birth of (c. 4 B.C.–A.D. 30-33) Also known as Jesus of Nazareth, Jesus Christ, the Messiah, and Savior of the World. He is the founding figure of Christianit... in Bethlehem. The first recorded celebration of is the most sacred holiday of the Christian calendar and celebrates the resurrection of Jesus. There was a serious dispute between the western and eas... occurred in Rome in A.D. 336. Why the date of the winter solstice was chosen is not clear but may have been based on an ancient belief regarding the day of Jesus’ birth, for symbolic purposes or to more easily integrate Christianity with the Roman pagan religion.