Thematic Bible: The four living creatures

And before the throne there was a sea of glass like unto crystal: and in the midst of the throne, and round about the throne, were four living creatures full of eyes in front and behind. And the first living creature was like a lion, and the second living creature like a calf, and the third living creature had a face as a man, and the fourth living creature was like a flying eagle. And the four living creatures had each of them six wings about him; and they were full of eyes within: and they rest not day and night, saying, Holy, holy, holy, Lord God Almighty, who was, and is, and is to come.