2 Kings 3:26-27 New American Bible, Revised Edition (NABRE)

26. When he saw that the battle was going against him, the king of Moab took seven hundred swordsmen to break through to the king of Edom, but he failed.

27. So he took his firstborn, who was to succeed him as king, and offered him as a burnt offering upon the wall. The wrath against Israel was so great that they gave up the siege and returned to their own land.

2 Kings 3