(45) Lasting love is disinterested love. (46) See II Sam. XII. (47) See I Sam. XVIII, 1. 20. Every controversy that is in the Name of Heaven (48) shall in the end lead to a permanent result, but every controversy that is not in the Name of Heaven shall not lead to a permanent result. Which controversy was that which was in the Name of Heaven? Such was the controversy of Hillel and Shammai (49). And that which was not in the Name of Heaven? Such was the controversy of Korah and all his company (50). (48) _I.e._, a controversy to arrive at the truth. (49) See chapter I, n. 29. (50) See Num. XV, 1 _et seq._ 21. Whosoever causes the multitude to be righteous, over him sin prevails not; but he who causes the multitude to sin shall not have the means to repent (51). Moses was righteous and made the multitude righteous; the righteousness of the multitude was laid upon him, as it is said, "He executed the justice of the Lord and his judgments with Israel" (52). Jeroboam, the son of Nebat, sinned and caused the multitude to sin; the sin of the multitude was laid upon him, as it is said, "For the sins of Jeroboam which he sinned and which he made Israel to sin" (53). (51) He who leads the people astray is punished by being prevented from repenting. This does not mean, however, that man, in general, does not act in accordance with his own free will. Maimonides, in discussing this problem, says, in the eighth chapter of the _Shemonah Perakim_, "Just as some of man's undertakings, which are ordinarily subject to his own free will, are frustrated by way of punishment, as, for instance, a man's hand being prevented from working so that he can do nothing with it, as was the case of Jeroboam, the son of Nebat, or a man's eyes from seeing, as happened to the Sodomites, who had assembled about Lot, likewise how does God withhold man's ability to use his own free will in regard to repentance, so that it never occurs to him to repent, and he thus finally perishes in his own wickedness." See ed. Gorfinkle, p. 94 _et seq._ (52) Deut. XXXIII, 21. (53) I Kings XV, 30. Cf. _Sanhedrin_ X, 2: "Three kings have no portion in the world to come . . . Jeroboam, Ahab, and Manasseh."