Isaiah's Commission. a Live Coal on His Lips

Isaiah 6

5 And I said: “Woe is me! For I am lost; for I am a man of unclean lips, and I dwell in the midst of 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, having in his hand a burning coal that he had taken with tongs from the altar.7 And he touched my mouth and said: “Behold, this has touched your lips; your guilt is taken away, and your sin atoned for.”8 And 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.”