Thematic Bible: Qualified by God

Then said I, 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, the LORD of hosts. Then flew one of the seraphim unto me, having a live coal in his hand, which he had taken with the tongs from off the altar: And he laid it upon my mouth, and said, Lo, this has touched your lips; and your iniquity is taken away, and your sin purged.

Not that we are sufficient of ourselves to think anything as of ourselves; but our sufficiency is of God; Who also has made us able ministers of the new covenant; not of the letter, but of the spirit: for the letter kills, but the spirit gives life.