For thou hast said, My doctrine is pure, and I am clean in thine eyes.
Thou hast said, My doctrine is pure - purposely used of Job's speeches, which sounded like lessons of doctrine. "My doctrine shall drop as the rain, my speech shall distil as the dew" (Deuteronomy 32:2; Proverbs 4:2).
And I am clean in thine eyes - addressed to God. Job had maintained his sincerity against his friends' suspicions, not faultlessness.