He sees heaven open, and the seat, and one sitting upon it, and 24 seats around it with 24 elders sitting upon them, and four creatures praising God day and night.

4 After this I looked, and behold, a door was open in heaven, and the first voice that I heard was as it were of a trumpet talking with me, which said, Come up here, and I will show you things that must be fulfilled hereafter. ² And immediately I was in the Spirit, and behold, a seat was put in heaven, and one sat on the seat. ³ And he that sat was to look upon like a jasper stone and a sardine stone. And there was a rainbow about the seat, in sight like an emerald.