Job 9:20

If I justify myself If I plead against God my own righteousness and innocence; my own mouth shall condemn me God is so infinitely wise, and just, and holy, that he will find sufficient matter of condemnation from my own words, though spoken with all possible care and circumspection; or he will discover so much imperfection in me, of which I was not aware, that I shall be compelled to join with him in condemning myself. If I say, I am perfect The words, I say, are not in the Hebrew, but seem to be properly supplied to complete the sense. The meaning is, If I were perfect in my own opinion, if I thought myself completely righteous and faultless; it shall prove me perverse That is, my own mouth shall prove, as he had just said; or he, that is, God shall, who is easily understood from the former verses, where he is often mentioned.