Revelation 4:6-9
4:6 and in front of the throne was something like a sea of glass, like crystal.
In the middle of the throne and around the throne were four living creatures full of eyes in front and in back.
4:7 The first living creature was like a lion, the second creature like an ox, the third creature had a face like a man’s, and the fourth creature looked like an eagle flying.
4:8 Each one of the four living creatures had six wings and was full of eyes all around and inside. They never rest day or night, saying:
“Holy Holy Holy is the Lord God, the All-Powerful,
Who was and who is, and who is still to come!”
4:9 And whenever the living creatures give glory, honor, and thanks to the one who sits on the throne, who lives forever and ever,