Talmud zu Jeschijahu 14:78

BARAITHA.²⁶K 17. R. Eliezer [b. Jacob] said: Whoever masturbates is as though he committed murder, as it is stated, That slay [shoḥeṭë] the children in the valleys. Do not read shoḥeṭë but soḥeṭë [‘that squeeze out’].
GEMARA. It has been taught:²⁷Nid. 13b (Sonc. ed., p. 88). Proselytes and they who masturbate delay the advent of the Messiah. This is understandable of them who masturbate because R. Joḥanan said: The son of David²⁸A term for the Messiah, who will be a descendant of David. will not come before all the souls in the guf²⁹lit. ‘body’, the place of the souls of the unborn. have been disposed of, as it is written, For the spirit that enwrappeth itself is from Me, and the souls which I have made.³⁰Isa. 57, 16. But why proselytes? For it has been taught:³¹Yeb. 47b (Sonc. ed., p. 312). Proselytes are as hard for Israel to endure as a sore, as it is stated, And the stranger shall join himself with them, and they shall cleave to the house of Jacob.³²Isa. 14, 1. There is a play upon the word for cleave (נספחו) and the word for scab (ספחת) in Lev. 13, 2. [Cf. Moore, op. cit., I, pp. 346f.]

HALAKHAH: [“The only difference between a public altar and a private altar, etc.”] Rebbi Joḥanan spent three years that he did not visit the house of assembly because of pain. At the end Rebbi Eleazar saw in his dream: Tomorrow Sinai will come down and bring a new insight. He came and said before them, from where is this truth verified that divine service is by firstborns?⁴⁷⁰Mishnah Zevaḥim14:4: Before the Tabernacle was erected private altars were permitted and the service was in the hands of the firstborn. From this verse⁴⁷¹Num. 3:13. The reference is to the later part of the verse, I sanctified for Me every firstborn in Israel., for Mine is every firstborn; on the day when I smote every firstborn in the Land of Egypt, etc. And it is written⁴⁷²Ex. 12:12. The firstborn were sanctified to God because the gods of Egypt were destroyed., and on all gods of Egypt I shall pass judgment, etc. Before that what were they doing? Rebecca took the desirable garments of her older son Esaw, which were with her in the house⁴⁷³Gen. 27:15.. What are “the desirable”? That he was acting as High Priest. Rebbi Levi said, the Eternal broke the staff of the evildoers⁴⁷⁴Is. 14:5., these are the firstborn who were the first to sacrifice to the Calf⁴⁷⁵Num. rabba 4(5)..