The shocking phrase "I, Jehovah, have deceived that prophet" does not mean God is the author of sin. Commentators explain this is a statement of God's sovereign, judicial action. When people and prophets willfully reject truth and desire lies, God, in judgment, gives them over to the deception they crave. Scholars consistently point to the story of Ahab's false prophets (1 Kings 22) as the classic example of God sending a "lying spirit" as a consequence of wickedness.