Isaiah 6:2-4 Christian Standard Bible (CSB)
2 Seraphim[a] were standing above him; they each had six wings: with two they covered their faces, with two they covered their feet, and with two they flew. 3 And one called to another:
Holy, holy, holy is the Lord of Armies;
4 The foundations of the doorways shook at the sound of their voices, and the temple was filled with smoke.