Isaiah 6:5-7

5Then I said, “1Woe to me, for I am ruined! Because I am a man of 2unclean lips, And I live among a 3people of unclean lips; For my eyes have seen the 4King, the Lord of armies.”

6Then one of the seraphim flew to me with a burning coal in his hand, which he had taken from the 5altar with tongs. 7He 6touched my mouth with it and said, “Behold, this has touched your lips; and 7your guilt is taken away and atonement is made for your sin.”