And the LORD said unto him, Wherewith? And he said, I will go forth, and I will be a lying spirit in the mouth of all his prophets. And he said, Thou shalt persuade him, and prevail also: go forth, and do so.

And Jehovah said unto him, Wherewith? And he said, I will go forth, and will be a lying spirit in the mouth of all his prophets. And he said, Thou shalt entice him, and shalt prevail also: go forth, and do so.

And he said: I will go forth, and be a lying spirit in the mouth of all his prophets. And the Lord said: Thou shalt deceive him, and shalt prevail: a go forth, and do so.

And Jehovah said unto him, Wherewith? And he said, I will go forth, and will be a lying spirit in the mouth of all his prophets. And he said, Thou shalt entice him, and also succeed: go forth, and do so.

And the LORD said to him, With what? And he said, I will go forth, and I will be a lying spirit in the mouth of all his prophets? And he said, Thou shalt persuade him, and prevail also: go forth, and do so.

and he saith, I go out, and have been a spirit of falsehood in the mouth of all his prophets; and He saith, Thou dost entice, and also thou art able; go out and do so.

And the Lord said, How? And he said, I will go out and be a spirit of deceit in the mouth of all his prophets. And he said, Your trick will have its effect on him: go out and do so.

The difficulties which attach to this passage are considerable. On the one hand, it is hard to suppose one of the holy Angels a "lying spirit;" on the other, hard to find Satan, or an evil spirit, included among "the host of heaven" 1-Kings 22:19 and acting as the minister of God. Still, Job 1:6; Job 2:1, lend countenance to the latter point, and 2-Thessalonians 2:11 to the former. But it may be doubted whether we ought to take literally, and seek to interpret exactly, each statement of the present narrative. Visions of the invisible world can only be a sort of parables; revelations, not of the truth as it actually is, but of so much of the truth as can be shown through such a medium. The details of a vision, therefore, cannot safely be pressed, anymore than the details of a parable. Portions of each must be accommodations to human modes of thought, and may very inadequately express the realities which they are employed to shadow forth to us.

Go forth, and do so - This is no more than, "God has permitted the spirit of lying to influence the whole of thy prophets; and he now, by my mouth, apprises thee of this, that thou mayest not go and fall at Ramoth-gilead." Never was a man more circumstantially and fairly warned; he had counsels from the God of truth, and counsels from the spirit of falsity; he obstinately forsook the former and followed the latter. He was shown by this parable how every thing was going on, and that all was under the control and direction of God, and that still it was possible for him to make that God his friend whom by his continual transgressions he had made his enemy; but he would not: his blood was therefore upon his own head.

And the LORD said unto him, Wherewith? And he said, I will go forth, and I will be a (r) lying spirit in the mouth of all his prophets. And he said, Thou shalt persuade [him], and prevail also: go forth, and do so.
(r) I will cause all his prophets to tell lies.

And the Lord said unto him, wherewith?.... What way and method did he propose, to persuade Ahab to go up to Ramoth? the Lord is introduced in this visionary narrative as asking this question, not as ignorant of the scheme of the evil spirit, but in order to bring it out, and lead on to the following account:
and he said, I will go forth, and I will be a lying spirit in the mouth of all his prophets; put them on encouraging Ahab to go up, and promising him success, as he had in former battles with the king of Syria, and which might both encourage them to give forth such a prediction, and him to believe it to be true; this proposal was quite agreeable to the character of the devil, as the father of lies:
and he said, thou shalt persuade him, and prevail also; not only make use of this artifice to persuade, but succeed also; the Lord knew that what he should suggest to the prophets, and they should deliver to Ahab, would be agreeable to his inclination, nor would he do anything in the course of his providence to hinder its taking effect:
go forth, and do so; which was giving leave to try his skill in the art of persuasion, in which he knew he would succeed, and bring on the righteous judgment of God upon Ahab; with this compare John 13:27.

He said - I will inspire a lie into the minds and mouths of his prophets. Thou shalt - I will give them up into thy hands, and leave them to their own ignorance and wickedness. Go - This is not a command, but only a permission.