Above it stood seraphim; each one had six wings: with two he covered his face, with two he covered his feet, and with two he flew.
Isaiah 6:2
Surrounding context
6:1 In the year that King Uzziah died, I saw the Lord sitting on a throne, high and lifted up, and the train of His robe filled the temple.
6:2 Above it stood seraphim; each one had six wings: with two he covered his face, with two he covered his feet, and with two he flew.
6:3 And one cried to another and said: "Holy, holy, holy is the LORD of hosts; The whole earth is full of His glory!"