Isaiah 6:
1 In the year of King Uzziah’s death I saw the Lord sitting on a throne, lofty and exalted, with the train of His robe filling the temple.
2 Seraphim stood above Him, each having six wings: with two he covered his face, and with two he covered his feet, and with two he flew.
3 And one called out to another and said,
“Holy, Holy, Holy, is the LORD of hosts,
The whole earth is full of His glory.”
4 And the foundations of the thresholds trembled at the voice of him who called out, while the temple was filling with smoke.
5 Then I said,
“Woe is me, for I am ruined!
Because I am a man of unclean lips,
And I live among a people of unclean lips;
For my eyes have seen the King, the LORD of hosts.”
6 Then one of the seraphim flew to me with a burning coal in his hand, which he had taken from the altar with tongs.
7 He touched my mouth with it and said, “Behold, this has touched your lips; and your iniquity is taken away and your sin is forgiven.”