Revelation 4:6 in the World English Bible
Before the throne was something like a sea of glass, similar to crystal. In the middle of the throne, and around the throne were four living creatures full of eyes before and behind.
Context
5 And out of the throne proceeded lightnings and thunderings and voices: and there were seven lamps of fire burning before the throne, which are the seven Spirits of God.
6 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 beasts full of eyes before and behind.
7 And the first beast was like a lion, and the second beast like a calf, and the third beast had a face as a man, and the fourth beast was like a flying eagle.