Revelation 4:5-6

MKJV(i) 5 And out of the throne came lightnings and thunderings and voices. And seven lamps of fire were burning in front of the throne, which are the seven spirits of God. 6 And a sea of glass was in front of the throne, like crystal. And in the midst of the throne, and around the throne, were four living creatures, full of eyes in front and behind.