“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.”
King James Version (KJV)
3:27 His son - Or rather, his own son: whom he sacrificed; partly, to obtain the favour of his god, according to the manner of the Phoenicians and other people in publick calamities; and partly, to oblige the Israelites to quit the siege out of compassion; or, as despairing to conquer (at least without greater loss of men than it was worth) him who was resolved to defend the city to the utmost extremity. On the wall - That the besiegers might see it, and be moved by it. There was, &c. - Or, great trouble or repentance upon Israel, the Israelitish king and people (who was the first cause of the war, and had brought the rest into confederacy with him) were greatly grieved for this barbarous action, and resolved to prosecute the war no farther.