Christmas is a complex mix of both biblical and pagan traditions. The origins of Christmas can be traced back to the Roman festival of Saturnalia, which was a celebration of the winter solstice. The Roman pagans celebrated the return of the sun and the end of the cold, dark winter by feasting, giving gifts, and decorating their homes with evergreens. The early Christians adopted these traditions and transformed them into a celebration of the birth of Jesus Christ. However, the date of Jesus' birth is unknown, and many scholars believe that the date of December 25th was chosen to align with the pagan festival.