Jehovah's Witnesses believe that only 144,000 people, a number found in Revelation chapters 7 and 14, will go to heaven to be kings and priests with Jesus. They say God will start a worldwide war called Armageddon, and the people who do not obey God or worship him the way he expects will be killed. The people who he approves will survive and be given the chance to live forever. Then God will begin to turn earth into a paradise without crime, sickness, pain, aging, wars or death. They say God will also bring back billions of people who died in the past so they can learn about God and possibly live in paradise as well.