Read 2 Kings 3:27 Using Other Translations
Then he took his eldest son that should have reigned in his stead, and offered him for a burnt offering upon the wall. And there was great indignation against Israel: and they departed from him, and returned to their own land.
Then he took his oldest son who was to reign in his place and offered him for a burnt offering on the wall. And there came great wrath against Israel. And they withdrew from him and returned to their own land.
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.