Holy, holy, holy is the LORD Almighty...

In the year that King Uzziah died, I saw the Lord, high and exalted,seated on a throne; and the train of his robe filled the temple. Above him were seraphim, each with six wings: With two wings they covered their faces, with two they covered their feet, and with two they were flying. And they were calling to one another: “Holy, holy, holy is the Lord Almighty, the whole earth is full of his glory.” At the sound of their voices the doorposts and thresholds shook and the temple was filled with smoke.

“Woe to me!” I cried. “I am ruined! For I am a man of unclean lips, and I live among a people of unclean lips, and my eyes have seen the King,the Lord Almighty.”

Isaiah chapter 6 verses 1-5