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 eldest son that should have reigned in his stead, and offered him for a burnt-offering upon the wall. And there was great wrath against Israel: and they departed from him, and returned to their own land.

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 in Israel, and presently they departed from him, and returned into their own country.

Then he took his eldest son that was to reign 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.

and he taketh his son, the first-born who reigneth in his stead, and causeth him to ascend, a burnt-offering on the wall, and there is great wrath against Israel, and they journey from off him, and turn back to the land.

Then he took his oldest son that should have reigned in his stead, and offered him for a burnt offering on 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 would have been king after him, offering him as a burned offering on the wall. So there was great wrath against Israel; and they went away from him, back to their country.

And taking his firstborn son, who would have reigned in his place, he offered him as a holocaust upon the wall. And there was great indignation in Israel. And they promptly withdrew from him, and they turned back to their own land.

Compare the marginal reference. Mesha, when his sally failed, took, as a last resource, his first born son, and offered him as a burnt-offering to appease the manifest anger of his god Chemosh, and obtain his aid against his enemies. This act was thoroughly in accordance with Moabitish notions.
And there was great indignation against Israel - Either the Israelites were indignant with themselves, or the men of Judah and the Edomites were indignant at the Israelites for having caused the pollution of this sacrifice, and the siege was relinquished.

Took his eldest son - The rabbins account for this horrible sacrifice in the following way: -
When the king of Moab found himself so harassed, and the royal city on the point of being taken, he called a council of his servants, and asked them how it was these Israelites could perform such prodigies, and that such miracles were wrought for them? His servants answered, that it was owing to their progenitor Abraham, who, having an only son, was commanded by Jehovah to offer him in sacrifice. Abraham instantly obeyed, and offered his only son for a burnt-offering; and the Israelites being his descendants, through his merits the holy blessed God wrought such miracles in their behalf. The king of Moab answered, I also have an only son, and I will go and offer him to my God. Then he offered him for a burnt-offering upon the wall.
Upon the wall - על החמה al hachamah. Rab. Song. Jarchi says that the letter ו vau is wanting in this word, as it should be written חומה chomah, to signify a wall; but חמה chammah signifies the sun, and this was the god of the king of Moab: "And he offered his first-born son for a burnt-offering unto the sun." This is not very solid.
There was great indignation - The Lord was displeased with them for driving things to such an extremity: or the surrounding nations held them in abomination on the account; and they were so terrified themselves at this most horrid sacrifice, that they immediately raised the siege and departed. In cases of great extremity it was customary in various heathen nations to offer human sacrifices, or to devote to the infernal gods the most precious or excellent thing or person they possessed. This was frequent among the Phoenicians, Romans, and Greeks; and it was the natural fruit of a religious system which had for the objects of its worship cruel and merciless divinities. How different the Christian system! "Wilt thou that we shall bring down fire from heaven and destroy them? Ye know not what manner of spirits ye are of; the Son of man is not come to destroy men's lives, but to save them."

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.

Then he took his eldest son, that should have reigned in his stead,.... Not the eldest son of the king of Edom, whom the king of Moab had in his hands before, which made the king of Edom the more willing to join in this expedition for the recovery of his son, as Joseph Kimchi thinks; or whom he took now in his sally out upon him, as Moses Kimchi and Ben Gersom, proceeding upon a mistaken sense of Amos 2:1 for the king of Edom could have no son that had a right, or was designed to succeed him, since he was but a deputy king himself; and besides, the sacrificing of him was not the way to cause the kings to raise the siege, but rather to provoke them to press it the more closely: it was the king of Moab that took his son and heir to the crown,
and offered him for a burnt offering upon the wall; that it might be seen by the camp of Israel, and move their compassion; or rather this was done as a religious action, to appease the deity by an human sacrifice so dear and precious, to give success, and cause the enemy to break up the siege; and was either offered to the true God, the God of Israel, in imitation of Abraham, as some Jewish writers fancy (n), or to his idol Chemosh, the sun; and Jarchi observes, out of an exposition of theirs, that "vau" is wanting in the word for wall, and so may be interpreted of the sun, towards which this burnt offering was offered; and it is observed, from various Heathen authors, that it was usual with the Heathens, when in calamity and distress, to offer up to their gods what was most dear and valuable to them; and particularly the Phoenicians (o), and from them the Carthaginians had this custom, who at one time offered up two hundred sons of their nobility, to appease their gods (p):
and there was great indignation against Israel; not of the king of Edom against them, for not rescuing his son, or because they were the means of this disaster which befell him; but of the king of Moab, who was quite desperate, and determined to hold out the siege to the utmost extremity: and they departed, and returned to their own land; the three kings, the one to Edom, the other to Israel, and the third to Judah; when they saw the Moabites would sell their lives so dear, and hold out to the last man, they thought fit to break up the siege; and perhaps were greatly affected with the barbarous shocking sight they had seen, and might fear, should they stay, something else of the like kind would be done.
(n) T. Bab. Sanhedrin, fol. 39. 2. Pesikta in Abarbinel in loc. (o) Vid. Euseb. Evangel. Praepar. l. 1. c. 10. p. 40. l. 4. c. 16. p. 156. Porphyr. de Abstinentia, l. 2. sect. 56. Vid. Aelian. Var. Hist. l. 12. c. 28. (p) Diodor. Sicul. Bibliothec. l. 20. p. 756.

took his eldest son that should have reigned in his stead, and offered him for a burnt offering, &c.--By this deed of horror, to which the allied army drove the king of Moab, a divine judgment came upon Israel; that is, the besiegers feared the anger of God, which they had incurred by giving occasion to the human sacrifice forbidden in the law (Leviticus 18:21; Leviticus 20:3), and hastily raised the siege.

But when this attempt failed, in his desperation he took his first-born son, who was to succeed him as king, and offered him as a sacrifice upon the wall, i.e., in the sight of the besiegers, not to the God of Israel (Joseph. Ephr. Syr., etc.), but to his own god Camos (see at 1-Kings 11:7), to procure help from him by appeasing his wrath; just as the heathen constantly sought to appease the wrath of their gods by human sacrifices on the occasion of great calamities (vid., Euseb. praepar. ev. iv. 16, and E. v. Lasaulx, die Shnopfer der Griechen und Rmer, pp. 8ff.). - "And there was (came) great wrath upon Israel, and they departed from him (the king of Moab) and returned into their land." As על קצף היה is used of the divine wrath or judgment, which a man brings upon himself by sinning, in every other case in which the phrase occurs, we cannot understand it here as signifying the "human indignation," or ill-will, which broke out among the besieged (Budd., Schulz, and others). The meaning is: this act of abomination, to which the king of the Moabites had been impelled by the extremity of his distress, brought a severe judgment from God upon Israel. The besiegers, that is to say, felt the wrath of God, which they had brought upon themselves by occasioning human sacrifice, which is strictly forbidden in the law (Leviticus 18:21; Leviticus 20:3), either inwardly in their conscience or in some outwardly visible signs, so that they gave up the further prosecution of the siege and the conquest of the city, without having attained the object of the expedition, namely, to renew the subjugation of Moab under the power of Israel.

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.