The King of Glory shall come in

After these things I looked, and behold, a door standing open in heaven. And the first voice which I heard was like a trumpet speaking with me, saying, “Come up here, and I will show you things which must take place after this.”

2 Immediately I was in the Spirit; and behold, a throne set in heaven, and One sat on the throne. 3 And He who sat there was like a jasper and a sardius stone in appearance; and there was a rainbow around the throne, in appearance like an emerald.

Revelation 4.1-3