How will the world end?

I am very confused here. Baptists and other religions similar to Baptists say that Christians are going to go to heaven after armagedon; however, Jehovians say that people are going to stay on Earth and there would not be no 666 and stuff like that and that ppl will stay on earth til the end until earth transformes to New Earth. also other religions that that earth is going to be burned. is this true? will the Antichrist come at all? how will the world end? plz help me..