26When the king of Moab saw that the battle was too fierce for him, he took with him seven hundred swordsmen to break through to the king of Edom, but they could not prevail.
27So he took his firstborn son, who was to succeed him, and offered him as a burnt offering on the city wall. And there was great fury against the Israelites, so they withdrew and returned to their own land.
— 2 Kings 3:26-27