Leviticus 20:20

20 He that doeth fleshly knowing with the wife of his father's brother, either of his mother's brother, and showeth the filth(hood) of his kin, both they shall bear their sin, [and] they shall die without free children. (He who doeth fleshly knowing with the wife of his father's brother, or the wife of his mother's brother, and uncovereth the nakedness of his kin, they both shall bear their sin, and they shall die without any children.)

Leviticus 20:20 Meaning and Commentary

Leviticus 20:20

And if a man shall lie with his uncle's wife
His uncle being dead, and he marry her, which is forbidden, ( Leviticus 18:14 ) ; he hath uncovered his uncle's nakedness:
his wife's, which was his, and therefore the kindred too near for a man to marry in, and such a copulation must be incestuous: they shall bear their sin;
"both" of them, as the Vulgate Latin, as before, ( Leviticus 20:19 ) ; the punishment of it, as follows: they shall be childless;
which Jarchi and other Jewish writers interpret, if they had any children at this time, that is, by a former marriage, they should die and be buried before them, which was reckoned a great punishment, see ( Jeremiah 22:30 ) .

Leviticus 20:20 In-Context

18 If a man doeth fleshly knowing with a woman in the flowing of blood of the month, and showeth her filth(hood), and she openeth the well of her blood, both they shall be slain from the midst of their people. (If a man doeth fleshly knowing with a woman during the flowing out of the blood of the month, and uncovereth her nakedness, and she openeth the well of her blood to him, they both shall be cut off from the midst of their people.)

19 Thou shalt not discover the filth(hood) of thy mother's sister, and of thy father's sister; he, that doeth this, shall make naked the shame of his flesh, and both they shall bear their wickedness. (Thou shalt not uncover the nakedness of thy mother's sister, or of thy father's sister; he, who doeth this, shall make naked his own kin's flesh, and they both shall bear their wickedness.)

20 He that doeth fleshly knowing with the wife of his father's brother, either of his mother's brother, and showeth the filth(hood) of his kin, both they shall bear their sin, [and] they shall die without free children. (He who doeth fleshly knowing with the wife of his father's brother, or the wife of his mother's brother, and uncovereth the nakedness of his kin, they both shall bear their sin, and they shall die without any children.)

21 He that weddeth his brother's wife, doeth an unleaveful thing; he showed his brother's filth(hood), [and] he shall be without free children. (He who weddeth his brother's wife, doeth an unlawful thing; he uncovered her nakedness which is for his brother alone, and they shall die without any children.)

22 Keep ye my laws and my dooms, and do ye those, lest the land, into which ye shall enter and dwell in, cast out vilely also you (also vilely throw you out).