Thematic Bible: Qualified by God

Then I said, "Woe is me! For I am undone, because 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, Yahweh of Armies!" Then one of the seraphim flew to me, having a live coal in his hand, which he had taken with the tongs from off the altar. He touched my mouth with it, and said, "Behold, this has touched your lips; and your iniquity is taken away, and your sin forgiven."

not that we are sufficient of ourselves, to account anything as from ourselves; but our sufficiency is from God; who also made us sufficient as servants of a new covenant; not of the letter, but of the Spirit. For the letter kills, but the Spirit gives life.