(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).