Jehovah's Witnesses do not celebrate Christmas because they believe that the holiday is rooted in pagan traditions, and they believe that true worship of God should be based on the Bible alone. They do not believe in celebrating birthdays either, as they view them as a distraction from serving God. Instead, they focus on preaching the message of the Bible and following the example set by Jesus Christ. They also place a strong emphasis on avoiding idolatry and maintaining a clean lifestyle.