Isaiah 6:2-4 Tree of Life Version (TLV)
2 Seraphim were standing above Him. Each had six wings: with two he covered his face and with two he covered his feet, and with two he flew. 3 One called out to another, and said:
“Holy, holy, holy, is Adonai-Tzva’ot!
4 Then the posts of the door trembled at the voice of those who called, and the House was filled with smoke.