Revelation 3:12 in the King James Version
Him that overcometh will I make a pillar in the temple of my God, and he shall go no more out: and I will write upon him the name of my God, and the name of the city of my God, which is new Jerusalem, which cometh down out of heaven from my God: and I will write upon him my new name.
Context
11 I am coming quickly! Hold firmly that which you have, so that no one takes your crown.
12 He who overcomes, I will make him a pillar in the temple of my God, and he will go out from there no more. I will write on him the name of my God and the name of the city of my God, the new Jerusalem, which comes down out of heaven from my God, and my own new name.
13 He who has an ear, let him hear what the Spirit says to the assemblies.