Revelation 1:18-20

18and the Living One. I was dead, but look — I am alive forever and ever, and I hold the keys of death and Hades.

19Therefore write what you have seen, what is, and what will take place after this.

20The mystery of the seven stars you saw in my right hand and of the seven golden lampstands is this: The seven stars are the angels of the seven churches, and the seven lampstands are the seven churches.