Revelation 4:6-9

6and before the throne, as it were a glassy sea like unto crystal; and in the midst of the throne, and round about the throne, four living creatures full of eyes before and behind.

7And the first creature was like a lion, and the second creature like a calf, and the third creature had a face as of a man, and the fourth creature was like a flying eagle.

8And the four living creatures, having each one of them six wings, are full of eyes round about and within: and they have no rest day and night, saying, Holy, holy, holy, is the Lord God, the Almighty, which was and which is and which is to come.

9And when the living creatures shall give glory and honour and thanks to him that sitteth on the throne, to him that liveth for ever and ever,