Revelation 4:7-8

7The first living creature was like a lion, the second was like an ox, the third had a face like a man, the fourth was like a flying eagle. 8Each of the four living creatures had six wings and was covered with eyes all around, even under its wings. Day and night they never stop saying: “ ‘Holy, holy, holy is the Lord God Almighty,’ who was, and is, and is to come.”