Isaiah 6:6-8

Then one of the seraphim flew to me with a burning coal in his hand, which he had taken from the altar with tongs. 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.” Then I heard the voice of the Lord, saying, “Whom shall I send, and who will go for Us?” Then I said, “Here am I. Send me!”