Revelation 4:1-3

Williams(i) 1 After this I had another vision: A door was standing open in heaven, and the first voice, like a trumpet, that I had heard speaking with me, said, "Come up here, and I will show you what must take place." 2 Immediately I was under the Spirit's power, and I saw a throne in heaven with One seated on it. 3 The One who was seated on it looked like jasper or sardius, and around the throne there was a rainbow that looked like an emerald.