29 The two armies camped opposite each other for seven days, and on the seventh day the battle began. The Israelites killed 100,000 Aramean foot soldiers in one day. 30 The rest fled into the town of Aphek, but the wall fell on them and killed another 27,000. Ben-hadad fled into the town and hid in a secret room.

31 Ben-hadad's officers said to him, "Sir, we have heard that the kings of Israel are merciful. So let's humble ourselves by wearing burlap around our waists and putting ropes on our heads, and surrender to the king of Israel. Then perhaps he will let you live." 32 So they put on burlap and ropes, and they went to the king of Israel and begged, "Your servant Ben-hadad says, 'Please let me live!'" The king of Israel responded, "Is he still alive? He is my brother!" 33 The men took this as a good sign and quickly picked up on his words. "Yes," they said, "your brother Ben-hadad!" "Go and get him," the king of Israel told them. And when Ben-hadad arrived, Ahab invited him up into his chariot. 34 Ben-hadad told him, "I will give back the towns my father took from your father, and you may establish places of trade in Damascus, as my father did in Samaria." Then Ahab said, "I will release you under these conditions." So they made a new treaty, and Ben-hadad was set free.

Matthew Henry's Commentary on 1 Kings 20:29-34

Commentary on 1 Kings 20:22-30

(Read 1 Kings 20:22-30)

Those about Benhadad advised him to change his ground. They take it for granted that it was not Israel, but Israel's gods, that beat them; but they speak very ignorantly of Jehovah. They supposed that Israel had many gods, to whom they ascribed limited power within a certain district; thus vain were the Gentiles in their imaginations concerning God. The greatest wisdom in worldly concerns is often united with the most contemptible folly in the things of God.

Commentary on 1 Kings 20:31-43

(Read 1 Kings 20:31-43)

This encouragement sinners have to repent and humble themselves before God; Have we not heard, that the God of Israel is a merciful God? Have we not found him so? That is gospel repentance, which flows from an apprehension of the mercy of God, in Christ; there is forgiveness with him. What a change is here! The most haughty in prosperity often are most abject in adversity; an evil spirit will thus affect a man in both these conditions. There are those on whom, like Ahab, success is ill bestowed; they know not how to serve either God or their generation, or even their own true interests with their prosperity: Let favour be showed to the wicked, yet will he not learn righteousness. The prophet designed to reprove Ahab by a parable. If a good prophet were punished for sparing his friend and God's when God said, Smite, of much sorer punishment should a wicked king be thought worthy, who spared his enemy and God's, when God said, Smite. Ahab went to his house, heavy and displeased, not truly penitent, or seeking to undo what he had done amiss; every way out of humour, notwithstanding his victory. Alas! many that hear the glad tidings of Christ, are busy and there till the day of salvation is gone.