Leviticus 18

1. And the Lord spoke unto Moses. I have not introduced this declaration amongst other similar ones, which had for their object the preparation of their minds for the reverent reception of the Law, because, whatever conformity there may be in the words themselves, in their substance there is a great difference; for they were general, whereas this is specially confined to a single point. For it was not God's intention here merely to exhort the people to the study of the Law, but the address respecting the keeping of His statutes is directed to the present cause, since He does not refer indifferently to all the statutes of Himself and of the Gentiles, but restricts Himself to the subject-matter, as it is called; and thus, by the statutes of the Gentiles, He means those corruptions whereby they had perverted His pure institution as to holy matrimony. First, however, tie forbids them from following the customs of the Egyptians, and then includes all the Canaanitish nations. For, since all the Orientals are libidinous, they never had any scruple in polluting themselves by incestuous marriages; whilst it is abundantly proved by history, how great were the excesses of the Egyptians¹ in this respect. A brother had no abhorrence against marrying his uterine sister, nor a paternal or maternal uncle his niece; in a word, they were so dead to. shame that they were carried away by their lusts to trample upon all the laws of nature. This is the reason why God here enumerates the kinds of incest of which the mention would else have been superfluous.

4. Ye shall therefore keep my statutes and my judgments. Because it is no less difficult to correct vices, to which men have been long accustomed, than to cure diseases of long standing, especially because people in general so pertinaciously cleave to bad examples, God adduces His statutes, in order to recall the people from the errors of their evil habits into the right way. For nothing is more absurd than for us to fix our minds on the actions of men, and not on God's word, in which is to be found the rule of a holy life. It is, therefore, just as if God would overthrow whatever had been received from long custom, and abolish the universal consent of the world by the authority of His doctrine. With this object He commands His Law to be regarded not once only, as we have already seen, lest the Israelites should abandon themselves to filthy lusts; but He diligently inculcates upon them, that they should turn away from all abuses, and keep themselves within the bounds and ordinances of His Law. And to this refers the expression, "I am the Lord your God;" containing a comparison between Himself and the heathen nations, between whom and His people He had interposed, as it were, a wall of partition.

6. None of you shall approach to any that is near. This name does not include all female relations; for cousin-ger-mans of the father's or mother's side are permitted to intermarry; but it must be restricted to the degrees, which He proceeds to enumerate, and is merely a brief preface, declaring that there are certain degrees of relationship which render marriages incestuous. We may, therefore, define these female relations of blood to be those which are spoken of immediately afterwards, viz., that a son should not marry his mother, nor a son-in-law his mother-in-law; nor a paternal or maternal uncle his niece, nor a grandfather his granddaughter, nor a brother his sister, nor a nephew his paternal or maternal aunt, or his uncle's wife, nor a father-in-law his daughter-in-law, nor a brother-in-law his brother's wife, nor a step-father his stepdaughter. The Roman laws accord with the rule prescribed by God, as if their authors had learnt from Moses what was decorous and agreeable to nature. The phrase which God uses frequently "to uncover the turpitude," is intended to awaken abhorrence, in order that the Israelites may beware more diligently of all incest. The Hebrew word, indeed, hwre, gnervah, signifies nakedness, therefore some translate it actively, "the nakedness of thy father," i.e., the womb which thy father hath uncovered; but this meaning would not be suitable to the nakedness of thy daughter, or thy daughter-in-law, or thy sister. Consequently, there is no doubt but that Moses means to denote that it is a filthy and shameful thing.

We must remember, what I have already hinted, that not only are incestuous connections out of wedlock condemned, but that the degrees are pointed out, within which marriages are unlawful. It is true, indeed, that this was a part of the political constitution which God established for His ancient people; still, it must be borne in mind, that whatever is prescribed here is deduced from the source of rectitude itself, and from the natural feelings implanted in us by Him. Absurd is the cleverness which some persons but little versed in Scripture pretend to,² who assert that the Law being abrogated, the obligations under which Moses laid his countrymen are now dissolved; for it is to be inferred from the preface above expounded, that. the instruction here given is not, nor ought to be accounted, merely political. For, since their lusts had led astray all the neighboring nations into incest, God, in order to inculcate chastity amongst his people, says; "I am the Lord your God, ye shall therefore keep my statutes; walk not after the doings of the land of Egypt and of Canaan;" and then He adds what are the degrees of consanguinity and affinity within which the marriage of men and women is forbidden. If any again object that what has been disobeyed in many countries is not to be accounted the law of the Gentiles, the reply is easy, viz., that the barbarism, which prevailed in the East, does not nullify that chastity which is opposed to the abominations of the Gentiles; since what is natural cannot be abrogated by any consent or custom. In short, the prohibition of incests here set forth, is by no means of the number of those laws which are commonly abrogated according to the circumstances of time and place, since it flows from the fountain of nature itself, and is founded on the general principle of all laws, which is perpetual and inviolable. Certainly God declares that the custom which had prevailed amongst the heathen was displeasing to Him; and why is this, but because nature itself repudiates and abhors filthiness, although approved of by the consent (suffragiis) of men? Wherefore, when God would by this distinction separate His chosen people from heathen nations, we may assuredly conclude that the incests which He commands them to avoid are absolute pollutions. Paul, on a very trifling point, sets before our eyes the law of nature; for, when he teaches that it is shameful and indecorous for women to appear in public without veils, he desires them to consider, whether it would be decent for them to present themselves publicly with their heads shorn; and finally adds, that nature itself does not permit it. (1 Corinthians 11:14.) Wherefore, I do not see, that, under the pretext of its being a political Law,³ the purity of nature is to be abolished, from whence arises the distinction between the statutes of God, and the abuses of the Gentiles. If this discipline were founded on the utility of a single people, or on the custom of a particular time, or on present necessity, or on any other circumstances, the laws deduced from it might be abrogated for new reasons, or their observance might be dispensed with in regard to particular persons, by special privilege; but since, in their enactment, the perpetual decency of nature was alone regarded, not even a dispensation of them would be permissible. It may indeed be decreed that it should be lawful and unpunished, since it is in the power of princes to remit penalties; yet no legislator can effect that a thing, which nature pronounces to be vicious, should not be vicious; and, if tyrannical arrogance dares to attempt it, the light of nature will presently shine forth and prevail. When, formerly, the Emperor Claudius had married his niece Agrippina,⁴ for the purpose of averting the shame, he procured a Senatusconsultum, which licensed such marriages; yet no one was found to imitate his example, except one freedman. Hence, just and reasonable men will acknowledge that, even amongst heathen nations, this Law was accounted indissoluble, as if implanted and engraved on the hearts of men. On this ground Paul, more severely to reprove the incest of a step-son with his father's wife, says, that such an occurrence "is not so much as named among the Gentiles." (1 Corinthians 5:1.)

If it be objected that such marriages are not prohibited to us in the New Testament, I reply, that the marriage of a father with his daughter is not forbidden; nor is a mother prohibited from marrying her son; and shall it therefore be lawful for those, who are near of kin, to form promiscuous connections?⁵ Although Paul expressly mentions only one kind of incest, yet he establishes its disgrace by adducing the example of the Gentiles, that at least we should be ashamed if more delicacy and chastity is seen amongst them. And:. in fact, another admonition of the same Paul is enough for me, who thus writes to the Philippians:

"Whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things." (Philippians 4:8.)

As to those who ascend or descend ill a direct line, it, sufficiently appears that there is a monstrous indecency in the connection of father and daughter, or mother and son. A licentious poet,⁶ being about to relate the frantic incest of Myrrha, says:

"Daughters and fathers, from my song retire,
I sing of horror."

In the collateral line, the uncles on both sides represent the father, and the aunts the mother; and, consequently, connection with them is forbidden, inasmuch as it would be of somewhat similar impropriety. The same rule affects affinity; for the step-mother, or mother-in-law, is held to stand in the relation of mother; and the step-daughter, or daughter-in-law, in that of daughter; as also the wife of the paternal or maternal uncle is to be regarded in the relation of mother. And, although express mention may not be made of it here, we must form our judgment by analogy as to what is prohibited; -- the uncle on the father's or mother's side is not here forbidden to marry his niece; but, since the nephew is interdicted from marrying his paternal or maternal aunt, the mutual relation of the inferior to the superior degree must prevail. But if any should contend that there is a difference, the reason added by Moses refutes his objection, for it is said, "She is thy father's or thy mother's near kinswoman." Hence it follows, that a niece is guilty of incest if she marries her uncle on either side. As to brothers and sisters, God pronounces that marriage with a sister, although she be not uterine, is unlawful; for He forbids the uncovering of the turpitude of a sister, who is either the daughter of thy father or thy mother.

16. Thou shalt not uncover the nakedness of thy brother's wife. They are bad⁷ interpreters who raise a controversy on this passage, and expound it, that a brother's wife must not be taken from his bed, or, if she be divorced, that manage with her would be unlawful whilst her husband was still alive; for it is incongruous to twist into different senses declarations which are made in the same place, and in the same words. God forbids the uncovering of the turpitude of the wife of a father, an uncle, and a son; and when He lays down the same rule respecting a brother's wife in the very same words, it is absurd to invent a different meaning for them. If, therefore, it be not lawful to marry the wife of a father, a son, an uncle, or a nephew, we must. hold precisely the same opinion with respect to a brother's wife, concerning whom an exactly similar law is enacted in the same passage and context. I am not, however, ignorant of the source from whence those, who think otherwise, have derived their mistake; for, whereas God gives a command in another place, that if a man shall have died without issue, his surviving brother shall take his widow to wife, in order that he may raise up of her seed to the departed, (Deuteronomy 25:5,) they have incorrectly and ignorantly restricted this to own-brothers, although God rather designates other degrees of relationship. It is a well-known Hebrew idiom, to embrace under the name of brother all near kinsmen in general; and the Latins also formerly so denominated cousins-german.⁸ The law, then, now before us, respecting marriage with a deceased brother's wife, is only addressed to those relations who are not otherwise prohibited from such a marriage, since it was not God's purpose to prevent the loss of a deceased person's name by permitting those incestuous marriages, which tie had elsewhere condemned. Wherefore these two points agree perfectly well, that an own-brother was prohibited from marrying his brother's widow, whilst the next of kin were obliged to raise up seed for the dead, by the right of their relationship, wherever their marriage was otherwise permissible by the enactment's of the law. On this ground Boaz married Ruth, who had previously been married to his near kinsman; and it is abundantly clear from the history, that the law applied to all the near kinsmen. But if any still contend that own-brothers were included in the number of these, on the same grounds the daughter-in-law must be married by her father-in-law, and the nephew's wife by the uncle, and even the mother-in-law by the son-in-law, which it is an abomination to speak of. If any object that Er, Onan, and Shelah, the sons of Judah, were own-brothers, and still that Tamar married two of them, the difficulty is easily solved, viz., that Judah, following the common and received practice of the Gentiles, acted improperly in permitting it. It is plain enough, from the histories of all ages, that there were disgusting and shameless mixtures in the marriages of Oriental nations. By evil communications, then, as is ever the case, Judah was led into giving the same wife to his second son as had before been married to the eldest. And, in fact, God expressly says that this offense was rife among the Gentiles, where tie condemns incestuous connections. This, therefore, I still hold to be unquestionable, that, by the law of Moses, marriage with the widow of an own-brother is forbidden.

18. Neither shalt thou take a wife to her sister. By this passage certain froward persons pretend that it is permitted, if a man has lost his wife, to marry her own sister, because the restriction is added, not to take the one in the lifetime of the other. From whence they infer, that it is not forbidden that she should succeed in the place of the deceased. But they ought to have considered the intention of the legislator from his own express words, for mention is made not only of incest and filthiness, but of the jealousy and quarrels, which arise from hence. If it had merely been said, "Thou shalt not uncover her turpitude," there would have been some color to their pretext, that the husband being a widower, he would be free to marry his wife's sister; but, when a different object for the law is expressly stated, i.e., lest she, who was legally married, should be troubled by quarrels and contentions, it is plain that the license for polygamy is restricted by this exception, in order that the Israelites should be contented with one evil, and, at least, should not expose two sisters to hostile contention with each other. The condition of the first wife was already painful enough, when she was compelled to put up with a rival and a concubine; but it was more intolerable to be constantly quarrelling with her near relative. The name of sister is not, therefore, restricted, I think, to actual sisters, but other relations are included in it, whose marriages would not otherwise have been incestuous. In a word, it is not incest which is condemned, so much as the cruelty of a husband, if he chose to contract a further marriage with the near kinswoman of his wife. Nor can we come to any other conclusion from the words of Moses; for if the turpitude of a brother is uncovered when his brother marries his widow, no less is the turpitude of a sister uncovered when her sister marries her husband after her decease. But hence we plainly see the diabolical arrogance of the Pope, who, by inventing new degrees of kindred, would be wiser than God; whilst he also betrays his cunning, because from this kind of sport he made himself a fat game-bag.

Since from long custom it is established that cousins-german should not marry, we must beware of giving scandal lest too unbridled a liberty should expose the Gospel to much reproach; and we must bear in mind Paul's admonition, to abstain even from things lawful when they are not expedient. (1 Corinthians 10:23.)