2 Kings 3:27

27 Then he took his son, his firstborn who would succeed him as king, and sacrificed him on the city wall. That set off furious anger against Israel. Israel pulled back and returned home.

2 Kings 3:27 In-Context

25 They leveled the towns, littered the cultivated fields with rocks, clogged the springs, and clear-cut the orchards. Only the capital, Kir Hareseth, was left intact, and that not for long; it too was surrounded and attacked with thrown and flung rocks.
26 When the king of Moab realized that he was fighting a losing battle, he took seven hundred swordsmen to hack a corridor past the king of Edom, but they didn't make it.
27 Then he took his son, his firstborn who would succeed him as king, and sacrificed him on the city wall. That set off furious anger against Israel. Israel pulled back and returned home.
Published by permission. Originally published by NavPress in English as THE MESSAGE: The Bible in Contemporary Language copyright 2002 by Eugene Peterson. All rights reserved.