Isaiah 6:2-4

2Seraphim stood above Him, 1each having six wings: with two he covered his face, and with two he covered his feet, and with two he flew. 3And one called out to another and said, “2Holy, Holy, Holy, is the Lord of hosts, The 34whole earth is full of His glory.” 4And the 5foundations of the thresholds trembled at the voice of him who called out, while the 67temple was filling with smoke.