2 Kings 3:20-27

²⁰And it happened in the morning about the time of offering the sacrifice, that behold, water came from the direction of Edom, and the country was filled with water.

²¹Now all the Moabites heard that the kings had come up to fight against them. And all who were able to put on armor and older were summoned and they took their positions on the border. ²²Then they got up early in the morning, and the sun shone on the water, and the Moabites saw the water opposite them as red as blood. ²³So they said, “This is blood; the kings must have fought each other, and they have killed one another. Now then, Moab, to the spoils!” ²⁴But when they came to the camp of Israel, the Israelites rose up and struck the Moabites, so that they fled from them; and the Israelites invaded the land, killing the Moabites. ²⁵So they destroyed the cities; and each one threw a stone on every plot of good land and filled it. So they stopped up every spring of water and cut down every good tree, until in Kir-hareseth only they left its stones; however, the rock slingers surrounded it and struck it. ²⁶When the king of Moab saw that the battle was too fierce for him, he took with him seven hundred men who drew swords, to break through to the king of Edom; but they could not. ²⁷Then the king of Moab took his oldest son who was to reign in his place, and offered him as a burnt offering on the wall. And great anger came upon Israel, and they departed from him and returned to their own land.