16 And he said, "Thus says the Lord: 'Make this valley full of ditches.' 17 For thus says the Lord: 'You shall not see wind, nor shall you see rain; yet that valley shall be filled with water, so that you, your cattle, and your animals may drink.' 18 And this is a simple matter in the sight of the Lord; He will also deliver the Moabites into your hand. 19 Also you shall attack every fortified city and every choice city, and shall cut down every good tree, and stop up every spring of water, and ruin every good piece of land with stones."
20 Now it happened in the morning, when the grain offering was offered, that suddenly water came by way of Edom, and the land was filled with water. 21 And when all the Moabites heard that the kings had come up to fight against them, all who were able to bear arms and older were gathered; and they stood at the border. 22 Then they rose up early in the morning, and the sun was shining on the water; and the Moabites saw the water on the other side as red as blood. 23 And they said, "This is blood; the kings have surely struck swords and have killed one another; now therefore, Moab, to the spoil!" 24 So when they came to the camp of Israel, Israel rose up and attacked the Moabites, so that they fled before them; and they entered their land, killing the Moabites. 25 Then they destroyed the cities, and each man threw a stone on every good piece of land and filled it; and they stopped up all the springs of water and cut down all the good trees. But they left the stones of Kir Haraseth intact. However the slingers surrounded and attacked it.
Matthew Henry's Commentary on 2 Kings 3:16-25
Commentary on 2 Kings 3:6-19
(Read 2 Kings 3:6-19)
The king of Israel laments their distress, and the danger they were in. He called these kings together, yet he charges it upon Providence. Thus the foolishness of man perverteth his way, and then his heart fretteth against the Lord, Psalm 84:6. We need not inquire whence the water came. God is not tied to second causes. They that sincerely seek for the dew of God's grace, shall have it, and by it be made more than conquerors.
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.