Isaiah 6:2-5

Heavenly creatures of fire stood above him. Each creature had six wings: It used two wings to cover its face, two wings to cover its feet, and two wings for flying. Each creature was calling to the others: “Holy, holy, holy is the LORD All-Powerful. His glory fills the whole earth.” Their calling caused the frame around the door to shake, as the Temple filled with smoke. I said, “Oh, no! I will be destroyed. I am not pure, and I live among people who are not pure, but I have seen the King, the LORD All-Powerful.”