Isaiah 6:2-4

Young's Literal Translation

² Seraphs are standing above it: six wings hath each one; with two [each] covereth its face, and with two [each] covereth its feet, and with two [each] flieth.

³ And this one hath called unto that, and hath said: `Holy, Holy, Holy, [is] Jehovah of Hosts, The fulness of all the earth [is] His glory.'

⁴ And the posts of the thresholds are moved by the voice of him who is calling, and the house is full of smoke.