Deuteronomy 24:1

Although what relates to divorce was granted in indulgence to the Jews, yet Christ pronounces that it was never in accordance with the Law, because it is directly repugnant to the first institution of God, from whence a perpetual and inviolable rule is to be sought. It is proverbially said that the laws of nature are indissoluble; and God has declared once for all, that the bond of union between husband and wife is closer than that of parent and child; wherefore, if a son cannot shake off the paternal yoke, no cause can permit the dissolution of the connection which a man has with his wife. Hence it appears how great was the perverseness of that nation, which could not be restrained from dissolving a most sacred and inviolable tie. Meanwhile the Jews improperly concluded from their impunity that that was lawful, which God did not punish because of the hardness of their hearts; whereas they ought rather to have considered, agreeably to the answer of Christ, that man is not at liberty to separate those whom God hath joined together. (Matthew 19:6.) Still, God chose to make a provision for women who were cruelly oppressed, and for whom it was better that they should at once be set free, than that they should groan beneath a cruel tyranny during their whole lives. Thus, in Malachi, divorce is preferred to polygamy, since it would be a more tolerable condition to be divorced than to bear with a harlot and a rival. (Malachi 2:14.) And undoubtedly the bill or scroll of divorce, whilst it cleared the woman from all disgrace, cast some reproach on the husband; for he who confesses that he puts away his wife, because she does not please him, brings himself under the accusation both of moroseness and inconstancy. For what gross levity and disgraceful inconstancy it shows, that a husband should be so offended with some imperfection or disease in his wife, as to east away from him half of himself! We see, then, that husbands were indirectly condemned by the writing of divorce, since they thus committed an injury against their wives who were chaste, and in other respects what they should be. On these grounds, God in Isaiah, in order that He might take away from the Jews all subject of complaint, bids them produce the bill of divorce, if He had given any to their mother, (Isaiah 1:1;) as much as to say, that His cause for rejecting them was just, because they had treacherously revolted to ungodliness.

Some interpreters do not read these three verses continuously, but suppose the sense to be complete at the end of the first, wherein the husband testifies that he divorces his wife for no offense, but because her beauty does not satisfy his lust. If, however, we give more close attention, we shall see that it is only one provision of the Law, viz., that when a man has divorced his wife, it is not lawful for him to marry her again if she have married another. The reason of the law is, that, by prostituting his wife, he would be, as far as in him lay, acting like a procurer. In this view, it is said that she was defiled, because he had contaminated her body, for the liberty which he gave her could not abolish the first institution of God, but rather, as Christ teaches, gave cause for adultery. (Matthew 5:31, and 19:9.) Thus, the Israelites were reminded that, although they divorced their wives with impunity, still this license was by no means excused before God.