2 Chronicles 18:21

And he said, I will go out and be a lying spirit, literally, "a spirit of deceit or lying falsehood," in the mouth of all his, Ahab's, prophets. And the Lord said, Thou shalt entice him, and thou shalt also prevail, so that his advice would be accepted; go out and do even so, this being understood, of course, in the nature of a permission and not of a command.