Cross reference
Ezekiel 1:5
5 And out of the midst thereof came the likeness of four living creatures. And this was their appearance: they had the likeness of a man.
Ezekiel 1:26
26 And above the firmament that was over their heads was the likeness of a throne, as the appearance of a sapphire stone; and upon the likeness of the throne was a likeness as the appearance of a man upon it above.
Revelation 4:6-8
6 and before the throne, as it were a sea of glass like a crystal; and in the midst of the throne, and round about the throne, four living creatures full of eyes before and behind.
7 And 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.
8 and 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, who was and who is and who is to come.
Revelation 6:6
6 And I heard as it were a voice in the midst of the four living creatures saying, A measure of wheat for a shilling, and three measures of barley for a shilling; and the oil and the wine hurt thou not.