Revelation 3:11-12

11I am coming quickly. Hold tight what you have, so that no one will take your crown [by leading you to renounce the faith].

12He who overcomes [the world through believing that Jesus is the Son of God], I will make him a pillar in the temple of My God; he will most certainly never be put out of it, and I will write on him the name of My God, and the name of the city of My God, the new Jerusalem, which descends out of heaven from My God, and My [own] new name.