After The Flood that God sent upon the earth to destroy all that was evil, God promised that never again would there be another flood, of water, that will cover all of the earth. But another flood is coming, not of water, but of fire. It will be a planet-wide ocean of fire that will purify, but not destroy, the entire earth, once and for all, after all Judgment has been completed. The only survivors will be those who have been found worthy, by repentance and obedience to God, and made spirit. Here's what your Bible plainly has to say about it:
"But do not ignore this one fact, beloved, that with The Lord one day is as a thousand years, and a thousand years as one day. The Lord is not slow about His promise as some count slowness, but is forbearing toward you, not wishing that any should perish, but that all should reach repentance."
"But the day of The Lord will come like a thief, and then the heavens will pass away with a loud noise, and the elements will be dissolved with fire, and the earth and the works that are upon it will be burned up."
"Since all these things are thus to be dissolved, what sort of persons ought you to be in lives of holiness and godliness, waiting for and hastening the coming of the day of God, because of which the heavens will be kindled and dissolved, and the elements will melt with fire! But according to His promise we wait for new heavens and a new earth in which righteousness dwells. (2 Peter 3:3-13 RSV)
Fact Finder: How is the new earth described?