For three years Syria and Israel continued without war.
Though Ahab continued under guilt and wrath, and the dominion of the lusts to which he had sold himself, yet, as a reward for his professions of repentance and humiliation, though the time drew near when he should descend into battle and perish, yet we have him blessed with a three years' peace (Kg1 22:1) and an honourable visit made him by Jehoshaphat king of Judah, Kg1 22:2.
Commenting on 1 Kings 22:1-14
And they continued three years without war between Syria and Israel. From the time that Benhadad made a covenant with Ahab; not three full years, but part of them: it was threatened by Elijah from the Lord, that Ahab's life should go for Benhadad's, because he had let him, go, Kg1 22:42, but because of his humiliation, as is thought by Ben Gersom and others...
And they continued three years without war between Syria and Israel. (a) Ben-hadad the king of Syria, and Ahab made a peace which endured three years.