Isaiah 6:2-4 NIV

2 Above him were seraphs,1 each with six wings: With two wings they covered their faces, with two they covered their feet,2 and with two they were flying.

References for Isaiah 6:2

3 And they were calling to one another: "Holy, holy3, holy is the LORD Almighty;4 the whole earth5 is full of his glory."6

References for Isaiah 6:3

4 At the sound of their voices the doorposts and thresholds shook and the temple was filled with smoke.7

References for Isaiah 6:4