21 “ ‘I will go and be a deceiving spirit in the mouths of all his prophets,’ he said. “ ‘You will succeed in enticing him,’ said the LORD. ‘Go and do it.’

Read 2 Chronicles 18:21 Using Other Translations

And he said, I will go out, and be a lying spirit in the mouth of all his prophets. And the LORD said, Thou shalt entice him, and thou shalt also prevail: go out, and do even so.
And he said, 'I will go out, and will be a lying spirit in the mouth of all his prophets.' And he said, 'You are to entice him, and you shall succeed; go out and do so.'
“And the spirit replied, ‘I will go out and inspire all of Ahab’s prophets to speak lies.’ “‘You will succeed,’ said the LORD . ‘Go ahead and do it.’