And they took Joseph's coat. They now return to their first scheme. In order that their father may have no suspicion of their crime, they send the bloody coat, from which he might conjecture that Joseph had been torn by some wild beast. Although Moses alludes to this briefly, I yet think that they rather sent some of their servants, who were not accessory to the crime, than any of their number. For he says soon afterwards, that his sons and daughters came to offer some consolation to him in his grief. And although in the words they use, there lurks some appearance of insult, it seems to me more probable that they gave this command to avert suspicion from themselves. For they feign themselves to be of confused mind, as is usual in affairs of perplexity. Yet whatever they intend, their wickedness drives them to this point, that they inflict a deadly wound upon the mind of their father. This is the profit which hypocrites gain by their disguises, that in wishing to escape the consequences of one fault, they add sin to sin. With respect to Jacob, it is a wonder that after he had been tried in so many ways, and always come forth a conqueror, he should now sink under grief. Certainly it was very absurd that the death of his son should occasion him greater sorrow than the incestuous pollution of his wife, the slaughter of the Shechemites, and the defilement of his daughter. Where was that invincible strength, by which he had even prevailed over the angel? Where the many lessons of patience with which God had exercised him, in order that he might never fail? This disposition to mourn, teaches us that no one is endued with such heroic virtues, as to be exempt from that infirmity of the flesh, which betrays itself sometimes even in little things; whence also it happens, that they who have long been accustomed to the cross, and who like veteran soldiers ought bravely to bear up against every kind of attack, fall like young recruits in some slight skirmish. Who then among us may not fear for himself, when we see holy Jacob faint, after having given so many proofs of patience?

And they took Joseph's coat,.... After they had told Reuben what they had done with him, who being willing to make the best of things as it was, joined with them in the following scheme: by this it appears, that when they took Joseph out of the pit they did not put his coat on him, but sold him naked, or almost so, to the merchants:
and killed a kid of the goats, and dipped the coat in the blood; that being, as the Targum of Jonathan and Jarchi observe, most like to human blood.

When Satan has taught men to commit one sin, he teaches them to try to conceal it with another; to hide theft and murder, with lying and false oaths: but he that covers his sin shall not prosper long. Joseph's brethren kept their own and one another's counsel for some time; but their villany came to light at last, and it is here published to the world. To grieve their father, they sent him Joseph's coat of colours; and he hastily thought, on seeing the bloody coat, that Joseph was rent in pieces. Let those that know the heart of a parent, suppose the agony of poor Jacob. His sons basely pretended to comfort him, but miserable, hypocritical comforters were they all. Had they really desired to comfort him, they might at once have done it, by telling the truth. The heart is strangely hardened by the deceitfulness of sin. Jacob refused to be comforted. Great affection to any creature prepares for so much the greater affliction, when it is taken from us, or made bitter to us: undue love commonly ends in undue grief. It is the wisdom of parents not to bring up children delicately, they know not to what hardships they may be brought before they die. From the whole of this chapter we see with wonder the ways of Providence. The malignant brothers seem to have gotten their ends; the merchants, who care not what they deal in so that they gain, have also obtained theirs; and Potiphar, having got a fine young slave, has obtained his! But God's designs are, by these means, in train for execution. This event shall end in Israel's going down to Egypt; that ends in their deliverance by Moses; that in setting up the true religion in the world; and that in the spread of it among all nations by the gospel. Thus the wrath of man shall praise the Lord, and the remainder thereof will he restrain.

they took Joseph's coat--The commission of one sin necessarily leads to another to conceal it; and the scheme of deception which the sons of Jacob planned and practised on their aged father was a necessary consequence of the atrocious crime they had perpetrated. What a wonder that their cruel sneer, "thy son's coat," and their forced efforts to comfort him, did not awaken suspicion! But extreme grief, like every other passion, is blind, and Jacob, great as his affliction was, did allow himself to indulge his sorrow more than became one who believed in the government of a supreme and all-wise Disposer.