I always look to Dr. John Gill when it comes to the OT:
1Ki 22:19 - And he saith, hear thou therefore the word of the Lord,.... Since he had represented what he had said as proceeding from hatred to him, he would make it clear and plain that what he had said was the word of the Lord, and according to his mind; and that what the other prophets had said was owing to a lying spirit in them, which the Lord suffered for his ruin; all which are represented as in a vision, in which things are brought down to the capacities of men, and not as really transacted:
I saw the Lord sitting on his throne; so it was represented to his mind, as if he had seen with his bodily eyes the divine Being in a glorious form, as a king sitting on his throne, to do justice and judgment; as Ahab and Jehoshaphat were now sitting on their thrones, only as a far greater King, even the King of kings, and in a more splendid manner:
and all the host of heaven standing by him on his right hand and on his left the ministering angels ready to do his will.
1Ki 22:20 - And the Lord said, who shall persuade Ahab, that he may go up and fall at Ramothgilead?.... Not that it can be supposed that the Lord entered into a consultation with the angels upon this subject; only that it was the decree of God that he should go thither, and fall by the hand of the man whom he had let go, as a just punishment of him:
and one said on this manner, and another said on that manner; not that there was such an altercation among them; it only signifies, that there are various ways and means, by which the purposes and decrees of God may be and are brought about.
1Ki 22:21 - And there came forth a spirit,.... Not from the heavenly host on the right hand or the left, for they are pure and holy spirits, and impeccable, and cannot lie or deceive; but the evil spirit, Satan, the father of lies, the old deceiver, who came forth from his own place and his own company:
and stood before the Lord presented himself before him, as Satan did, Job_1:6,
and said, l will persuade him; or prevail upon him; evil spirits love to be employed in doing harm to men, they go about seeking whom they may devour. This could not be the spirit of Naboth, as the Jews say (q), seeking revenge on Ahab; that was in a state of happiness, could not move from thence, and be capable of sinning.
(q) T. Bab. Sanhedrin, fol. 89. 1. & 102. 2. Targum in 2 Chron. xviii. 20.
1Ki 22:22 - 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 Joh_13:27.
1Ki 22:23 - Now therefore behold, the Lord hath put a lying spirit in the mouths of all these thy prophets,.... That is, suffered the lying spirit to suggest a lie to them, and sent them strong delusions to believe that lie, whose minds were disposed at any rate to flatter Ahab, to whom they told it; which was the way designed to bring him to the ruin appointed for him:
and the Lord hath spoken evil concerning thee: he had decreed it in himself, declared it by Micaiah his prophet, and suffered all those steps to be taken by Satan and the false prophets, to bring him to it.