Bible Notes Online - 2-Chronicles 18 - ESV
Commentary

v1-3: Unwisely, Jehoshaphat allied himself with Ahab. See also 2 Kings 8.18, where Jehoram married Ahab's daughter.

v4-6: In the midst of Ahab's prophets, with their message of confidence, Jehoshaphat's spiritual character shone through. He sought the mind of the Lord before embarking upon the battle. He had some discernment, knowing that the prophets were not prophets of the Lord.

v7: Ahab hated Micaiah, for he never prophesied anything good concerning Ahab. Ahab had to learn that truth exposes sinful attitudes. Even a king should not despise a true prophet, nor his message.

v8-11: See Deut 18.20-22; Zedekiah and the other prophets claimed to speak on behalf of the Lord; but the Lord had not sent them. The reality is that such things can happen today, in that some claim to speak on behalf of God, but do not bring the truth.

The 'lying spirit' from God was real. Yet Ahab remained responsible for his sin and rebellion against God.

v12-13: The messenger sent from Ahab put pressure on Micaiah to speak favourably by predicting success; but his desire was to speak faithfully, speaking only what God had said.

Micaiah ran a great risk; of being a lone voice; of displeasing the king; of losing his liberty. He spoke of "my God", indicating that he knew God, and heard His voice. This man appears only in this incident, but his character shines through.

v14-16: Micaiah began by copying the false prophets, which message Ahab knew was false. The true message was not popular, that Israel would be scattered like sheep without a shepherd.

v17-22: Ahab's prejudices were confirmed, as Micaiah delivered his message of "only bad". But Micaiah had more to bring. The prophet is not limited to answering a man's question.

Micaiah's authority was the Lord Himself, in contrast to the false prophets. His brave prediction was of Ahab's death. He went further, and denounced the false prophets.

v23-26: Micaiah had said enough; the prophets, led by Zedekiah, launched their attack upon him. The king also had him imprisoned.

v27: Micaiah had no doubt that the message was from God. The message could be tested; if Ahab returned in safety, then Micaiah's words were false.

v28: In spite of Micaiah's words, both Ahab and Jehoshaphat went up to attack Ramoth Gilead.

v29: Ahab thought he could escape the attacks of the enemy, and the judgment of God, by going in disguise. He seemed to want Jehoshaphat to distract the enemy, and put his own life at risk.

v30-32: The King of Aram ordered his chariot commanders to target the king of Israel. They saw Jehoshaphat and attacked him, thinking him to be the king of Israel. The Lord delivered Jehoshaphat.

v33-34: An arrow drawn and fired at random was God's judgment upon Ahab. He had rebelled against God, had refused to repent, and God brought him to death, as He had warned through Micaiah.