Question: where in the bible does it mention new earth?
Answer: The New Earth is an expression used in the Book of Isaiah (65:17 & 66:22), 2 Peter (3:13), and the Book of Revelation (21:1) in the Bible to describe the final state of redeemed humanity. It is one of the central doctrines of Christian eschatology and is referred to in the Nicene Creed as the world to come.