Revelation 4:6-11 NIV

Also in front of the throne there was what looked like a sea of glass, clear as crystal. In the center, around the throne, were four living creatures, and they were covered with eyes, in front and in back. The 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. Each 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.” Whenever the living creatures give glory, honor and thanks to him who sits on the throne and who lives for ever and ever, the twenty-four elders fall down before him who sits on the throne and worship him who lives for ever and ever. They lay their crowns before the throne and say: “You are worthy, our Lord and God, to receive glory and honor and power, for you created all things, and by your will they were created and have their being.”