Cross reference
Revelation 5:7
7 And he came and took it out of the right hand of him who was seated on the high seat.
Revelation 5:1
1 And I saw in the right hand of him who was seated on the high seat, a book with writing inside it and on the back, shut with seven stamps of wax.
Revelation 4:2-3
2 Straight away I was in the Spirit: and I saw a high seat in heaven, and one was seated on it;
3 And to my eyes he was like a jasper and a sardius stone: and there was an arch of light round the high seat, like an emerald.