3:27 Then he took his eldest son that should have reigned in his stead, and {r} 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.
(r) Some refer it to the king of Edom's son, whom they say he had taken in that skirmish: but rather it seemed to be his own son, whom he offered to his gods to pacify them: which barbarous cruelty moved the Israelites hearts of pity to depart.
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, and 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.
3:20-27 It is a blessing to be favoured with the company of those who have power with God, and can prevail by their prayers. A kingdom may be upheld and prosper, in consequence of the fervent prayers of those who are dear to God. May we place our highest regard upon such as are most precious in his account. When sinners are saying Peace, peace, destruction comes upon them: despair will follow their mad presumption. In Satan's service and at his suggestion, such horrid deeds have been done, as cause the natural feelings of the heart to shudder; like the king of Moab's sacrificing his son. It is well not to urge the worst of men to extremities; we should rather leave them to the judgment of God.