20 The next day at about the time when the morning sacrifice was offered, water suddenly appeared! It was flowing from the direction of Edom, and soon there was water everywhere. 21 Meanwhile, when the people of Moab heard about the three armies marching against them, they mobilized every man who was old enough to strap on a sword, and they stationed themselves along their border. 22 But when they got up the next morning, the sun was shining across the water, making it appear red to the Moabites-like blood. 23 "It's blood!" the Moabites exclaimed. "The three armies must have attacked and killed each other! Let's go, men of Moab, and collect the plunder!" 24 But when the Moabites arrived at the Israelite camp, the army of Israel rushed out and attacked them until they turned and ran. The army of Israel chased them into the land of Moab, destroying everything as they went. 25 They destroyed the towns, covered their good land with stones, stopped up all the springs, and cut down all the good trees. Finally, only Kir-hareseth and its stone walls were left, but men with slings surrounded and attacked it. 26 When the king of Moab saw that he was losing the battle, he led 700 of his swordsmen in a desperate attempt to break through the enemy lines near the king of Edom, but they failed. 27 Then the king of Moab took his oldest son, who would have been the next king, and sacrificed him as a burnt offering on the wall. So there was great anger against Israel, and the Israelites withdrew and returned to their own land.

Matthew Henry's Commentary on 2 Kings 3:20-27

Commentary on 2 Kings 3:20-27

(Read 2 Kings 3:20-27)

It is a blessing to be favoured with the company of those who have power with God, and can prevail by their prayers. A kingdom may be upheld and prosper, in consequence of the fervent prayers of those who are dear to God. May we place our highest regard upon such as are most precious in his account. When sinners are saying Peace, peace, destruction comes upon them: despair will follow their mad presumption. In Satan's service and at his suggestion, such horrid deeds have been done, as cause the natural feelings of the heart to shudder; like the king of Moab's sacrificing his son. It is well not to urge the worst of men to extremities; we should rather leave them to the judgment of God.