Revelation 4:6-8 English Standard Version (ESV)

⁶ and before the throne there was as it were a sea of glass, like crystal.

And around the throne, on each side of the throne, are four living creatures, full of eyes in front and behind: ⁷ the first living creature like a lion, the second living creature like an ox, the third living creature with the face of a man, and the fourth living creature like an eagle in flight. ⁸ And the four living creatures, each of them with six wings, are full of eyes all around and within, and day and night they never cease to say,