19 "'You shall not uncover the nakedness of your mother's sister, nor of your father's sister; for he has made naked his close relative: they shall bear their iniquity.
*Minor differences ignored. Grouped by changes, with first version listed as example.
And thou shalt not uncover the nakedness of thy mother's sister, nor of thy father's sister,.... An aunt either by mother or father's side, against which the law is, Leviticus 18:13,
for he uncovereth his near kin; as an aunt is to a man, and so an uncle to a woman, and both equally criminal; for it is a rule that holds good in all those cases, though not expressed, that what is binding upon one sex is upon the other, being in the same degree of relation, whether of consanguinity or affinity:
they shall bear their iniquity; "both" of them, as the Vulgate Latin version, the man and his aunt, and so a woman and her uncle:
the guilt of their sin shall be upon them, and the punishment of it be inflicted on them; either they should be cut off from their people, as before, or be childless, as in the following instances.
No civil punishment, on the other hand, to be inflicted by the magistrate or by the community generally, was ordered to follow marriage with an aunt, the sister of father or mother (Leviticus 20:19, cf. Leviticus 18:12-13), with an uncle's wife (Leviticus 20:20, cf. Leviticus 18:4), or with a sister-in-law, a brother's wife (Leviticus 20:21, cf. Leviticus 18:16). In all these cases the threat is simply held out, "they shall bear their iniquity," and (according to Leviticus 20:20, Leviticus 20:21) "die childless;" that is to say, God would reserve the punishment to Himself (see at Leviticus 18:14). In the list of punishments no reference is made to intercourse with a mother (Leviticus 18:7) or a granddaughter (Leviticus 18:10), as it was taken for granted that the punishment of death would be inflicted in such cases as these; just as marriage with a daughter or a full sister is passed over in the prohibitions in ch. 18.
*More commentary available at chapter level.