Isaiah 6:6-8 Darby Translation (DARBY)
6 And one of the seraphim flew unto me, and he had in his hand a glowing coal, which he had taken with the tongs from off the altar;
7 and he made it touch my mouth, and said, Behold, this hath touched thy lips; and thine iniquity is taken away, and thy sin expiated.
8 And I heard the voice of the Lord saying, Whom shall I send, and who will go for us? And I said, Here am I; send me.