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 came great wrath against Israel: and they departed from him, and returned to their own land.
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Ephrem The Syrian
AD 373
People imitate those who do good deeds, therefore, not out of love for these good deeds but because of their usefulness. For Balaam also flattered [God], in that he had seven altars built because he had heard concerning these ancient ones that, with regard to the sacrifices they had offered to him, their prayers were accepted. The king of Moab took note of Jephthah. But, because it was his firstborn and a human being rather than an animal that he killed, God took pity on him, since it was in affliction that he did it and not through love. In the case of Jephthah, if it had been one of his servants who had been first to encounter him, he would have killed him. But, in order that people would not engage in the sacrifice of their fellow human beings, he caused his own daughter to meet him, so that others would be afraid, lest they offer human beings by vow to God. - "Commentary on Tatian’s Diatessaron 10.3"
Therefore Mesha, who had lost all his hope in his armies, made an about-face to ask the gods for help, because he had seen that no human being could help him. Certain wise men of his country said to him that it was necessary to implore the mercy of the God of Israel by means of an extraordinary sacrifice, for exactly the same reason which Abraham, the father of the Israelites, had made his offering, which had been quite pleasing to God, according to the tradition that is generally renowned among the Canaanites. But the power and the strength of God had already been recognized by all with great admiration for what he had done before all the Moabites. Indeed, no one but him had made the water flow on his people in the desert of Edom, and they had never heard of or known another God who granted his worshipers greater benefits. Therefore the king, who could not deny the miracle that he had seen with his own eyes, did not want to be deprived of sufficient aid in the difficulties that encirc...
Wall, to Chamos, the idol of Moab; (Menochius) or to Moloc, to appease the wrath of the gods. Horrible blindness! The pagans believed, that the most precious thing ought to be sacrificed in very imminent dangers. (Philo Biblius, following Eusebius, præp. iv. 16.)
The Phoenicians offered such victims to Saturn. Many devoted themselves to death for the safety of the Roman republic; and some were ready to do so, to preserve the lives of Caligula and Nero, before they had given proof of their evil dispositions. (Seutonius xiv.)
It is thought that Sennacherib intended to treat his two sons in this manner, if they had not prevented him. (Abulensis, in 4 Kings xix. 37.)
Some imagine that Mesa sacrificed his son to the God of Israel, in imitation of Abraham; (Josephus; Grotius) others, that he slew the son of the king of Edom, out of revenge. (Kimchi, in Amos ii. 1.)
The Hebrew is ambiguous. (Amama)
But interpreters generally believe, that the heir of Mesa fell a victim (Calmet) to his fa...