Jehovah's Witnesses often practice door-to-door evangelization, elect not to participate in military service or politics, do not accept blood transfusions and do not celebrate Christmas, Easter or birthdays. These are just some of the beliefs that govern their daily lives, all of which are based on their interpretation of the Bible.
The beliefs of Jehovah's Witnesses are derived from examples of early Christians and the words of Jesus as recorded in the Bible. They are a Christian denomination who receive their name from their practice of traveling door-to-door acting as witnesses to God, or Jehovah, by conversing with others to share and spread their beliefs.
Following the example of Jesus, Jehovah's Witnesses maintain political neutrality and do not believe in participating in war. The Bible instructs abstaining from blood, which Jehovah's Witnesses view as a sacred source of life. Therefore, accepting a blood transfusion would not only require acting in opposition to the Bible, but also disrespecting God, who bestows life.
Jehovah's Witnesses believe Jesus intended Christians to commemorate his death, not his resurrection, his birth or their own birth. Easter, Christmas and birthday celebrations are also not celebrated because they are believed to have roots in ancient Pagan and non-Christian rituals.