Isaiah 6:5-8

Then I said: “Oy to me! For I am ruined! For I am a man of unclean lips, and I am dwelling among a people of unclean lips. For my eyes have seen the King, ADONAI-Tzva’ot!” Then one of the seraphim flew to me, with a glowing coal in his hand, which he had taken with tongs from the altar. He touched my mouth with it and said: “Behold, this has touched your lips. Your iniquity is taken away, and your sins atoned for.” Then I heard the voice of ADONAI saying: “Whom should I send, and who will go for Us?” So I said, “Hineni. Send me.”