Jihad—"War in the name of God." Even though all religions want to be seen as peace-loving, history shows that most wars, including the Crusades of the Middle Ages, have been fueled by the religious beliefs of competing armies. The word "Jihad" comes from an ancient Arabic word, but holy war didn't begin with the Muslims. The Bible itself contains the records of war and violence sanctioned by the God of the Old Testament. Can the origin of religious wars be traced to the Jewish and Christian Scriptures? "Holy War and the Bible," on the next Day of Discovery.