Isaiah 6:1-3

1 In the year that king Uzziah died I saw also the LORD sitting on a throne, high and lifted up, and his train filled the temple.

2 Above it stood the seraphim: each one had six wings; with two he covered his face, and with two he covered his feet, and with two he did fly.

3 And one cried to another, and said, Holy, holy, holy, is the LORD of hosts: the whole earth is full of his glory.