Matthew 19:7

This sentence of chastity seemed hard to these adulterers; but they could not make answer to the argument. Howbeit, they will not submit to the truth, but betake themselves for shelter to Moses, as men having a bad cause fly to some powerful personage, that where justice is not, his countenance may prevail; They say unto him, Why did Moses then command to give a writing of divorcement, and to put her away?

What then ought they to have done after this? Ought they not to have held their peace, and to have commended the saying? ought they not to have marvelled at His wisdom? ought they not to have stood amazed at His accordance with the Father? But none of these things do they, but as though they were contending for the law, they say, "How then did Moses command to give a writing of divorcement, and to put her away?" And yet they ought not now to have brought this forward, but rather He to them; but nevertheless He doth not take advantage of them, nor doth He say to them, "I am not now bound by this," but He solves this too. And indeed if He had been an alien from the old covenant, He would not have striven for Moses, neither would He have argued positively from the things done once for all at the beginning; He would not have studied to show that His own precepts agreed with those of old. And indeed Moses had given many other commandments besides, both those about meats, and those about the Sabbath; wherefore then do they nowhere bring him forward, as here? From a wish to enlist the multitude of the husbands against him. For this was considered a thing indifferent with the Jews, and all used to do so much as this. Accordingly it was for this reason that when so many things had been said on the mount, they remembered this commandment only now.

When the Pharisees saw that the Lord had confuted them, they were compelled to bring forward Moses as a lawgiver who contradicted Christ, and they asked, "Why did Moses then command to give a writing of divorcement, and to put her away?"

They say to him: why then did Moses command to give a bill of divorce, and to put away? Here their objection against the general law is presented: for they reveal what was in their mind. Why then did Moses command to give a bill …

Why did Moses command - Christ replies, Moses permitted (not commanded) it, because of the hardness of your hearts - Because neither your fathers nor you could bear the more excellent way.

Further observe, The law of Moses considered the hardness of men's hearts, but the gospel of Christ cures it; and his grace takes away the heart of stone, and gives a heart of flesh. By the law was the knowledge of sin, but by the gospel was the conquest of it. He reduces them to the original institution;

They say unto him,....

In these verses we have the mind of Christ declared on two subjects of great moment. One is the relation of husband and wife; the other is the light in which we should regard little children in the matter of their souls. It is difficult to overrate the importance of these two subjects: the well-being of nations and the happiness of society are closely connected with right views upon them. Nations are nothing but a collection of families.

In these verses we have the mind of Christ declared on two subjects of great moment. One is the relation of husband and wife; the other is the light in which we should regard little children in the matter of their souls. It is difficult to overrate the importance of these two subjects: the well-being of nations and the happiness of society are closely connected with right views upon them. Nations are nothing but a collection of families. The good order of families depends entirely on keeping up the highest standard of respect for the marriage tie, and on the right training of children. We ought to be thankful that, on both these points, the great head of the church pronounced judgment so clearly. With respect to marriage, our Lord teaches that the union of husband and wife ought never to be broken off, except for the greatest of all causes, namely, actual unfaithfulness. In these days when our Lord was upon earth divorces were permitted among the Jews for the most trifling and frivolous causes. The practice, though tolerated by Moses to prevent worse evils—such as cruelty or murder—had gradually become an enormous abuse, and no doubt led to much immorality ( Malachi 2:14–16 ). The remark made by our Lord’s disciples shows the deplorably low state of public feeling on the subject. They said, “If the case of the man be so it is not good to marry ”They meant, of course, “if a man may not put away his wife for a slight cause at any time, he had better not marry at all.” Such language from the mouths of apostles sounds strange indeed! Our Lord brings forward a widely different standard for the guidance of his disciples. He first founds his judgment on the original institution of marriage.

Why did Moses then command to give a writing of divorcement? - It is not an unusual case for the impure and unholy to seek for a justification of their conduct from the law of God itself, and to wrest Scripture to their own destruction. I knew a gentleman, so called, who professed deep reverence for the sacred writings, and, strange as it may appear, was outwardly irreproachable in every respect but one; that was, he kept more women than his wife. This man frequently read the Bible, and was particularly conversant with those places that spoke of or seemed to legalize the polygamy of the patriarchs! A writing of divorcement - See the form of it in the note on Mat 5:31 (note).