1 When a man hath taken a wife, and married her, and it come to pass that she find no favour in his eyes, because he hath found some uncleanness in her: then let him write her a bill of divorcement, and give it in her hand, and send her out of his house. 2 And when she is departed out of his house, she may go and be another man's wife. 3 And if the latter husband hate her, and write her a bill of divorcement, and giveth it in her hand, and sendeth her out of his house; or if the latter husband die, which took her to be his wife; 4 Her former husband, which sent her away, may not take her again to be his wife, after that she is defiled; for that is abomination before the LORD: and thou shalt not cause the land to sin, which the LORD thy God giveth thee for an inheritance. 5 When a man hath taken a new wife, he shall not go out to war, neither shall he be charged with any business: but he shall be free at home one year, and shall cheer up his wife which he hath taken. 6 No man shall take the nether or the upper millstone to pledge: for he taketh a man's life to pledge. 7 If a man be found stealing any of his brethren of the children of Israel, and maketh merchandise of him, or selleth him; then that thief shall die; and thou shalt put evil away from among you. 8 Take heed in the plague of leprosy, that thou observe diligently, and do according to all that the priests the Levites shall teach you: as I commanded them, so ye shall observe to do. 9 Remember what the LORD thy God did unto Miriam by the way, after that ye were come forth out of Egypt. 10 When thou dost lend thy brother any thing, thou shalt not go into his house to fetch his pledge. 11 Thou shalt stand abroad, and the man to whom thou dost lend shall bring out the pledge abroad unto thee. 12 And if the man be poor, thou shalt not sleep with his pledge: 13 In any case thou shalt deliver him the pledge again when the sun goeth down, that he may sleep in his own raiment, and bless thee: and it shall be righteousness unto thee before the LORD thy God. 14 Thou shalt not oppress an hired servant that is poor and needy, whether he be of thy brethren, or of thy strangers that are in thy land within thy gates: 15 At his day thou shalt give him his hire, neither shall the sun go down upon it; for he is poor, and setteth his heart upon it: lest he cry against thee unto the LORD, and it be sin unto thee. 16 The fathers shall not be put to death for the children, neither shall the children be put to death for the fathers: every man shall be put to death for his own sin. 17 Thou shalt not pervert the judgment of the stranger, nor of the fatherless; nor take a widow's raiment to pledge: 18 But thou shalt remember that thou wast a bondman in Egypt, and the LORD thy God redeemed thee thence: therefore I command thee to do this thing. 19 When thou cuttest down thine harvest in thy field, and hast forgot a sheaf in the field, thou shalt not go again to fetch it: it shall be for the stranger, for the fatherless, and for the widow: that the LORD thy God may bless thee in all the work of thine hands. 20 When thou beatest thine olive tree, thou shalt not go over the boughs again: it shall be for the stranger, for the fatherless, and for the widow. 21 When thou gatherest the grapes of thy vineyard, thou shalt not glean it afterward: it shall be for the stranger, for the fatherless, and for the widow. 22 And thou shalt remember that thou wast a bondman in the land of Egypt: therefore I command thee to do this thing.
[AD 430] Augustine of Hippo on Deuteronomy 24:1
The Lord explains the intention of the law, which required a bill of divorce in every case where a wife was put away. The precept not to put away a wife is the opposite of saying that a man may put away his wife if he pleases, which is not what the law says. On the contrary, to prevent the wife from being put away, the law required this intermediate step, that the eagerness for separation might be checked by the writing of this bill and the man might have time to think of the evil of putting away his wife.

[AD 606] Paterius on Deuteronomy 24:6
To take (accipere) means “to take away.” Thus those birds that are eager to seize other birds are called hawks (accipiter). Paul says, “For you bear it, if anyone consumes you, if anyone takes you.” The same would be true if he said, if anyone seizes you.The sinner’s confession is like the pledge of a debtor. For the pledge is received from the debtor when the sinner makes his confession of sin. The upper and lower millstones in this confession are hope and fear. Hope draws us up to the heights. Fear keeps the heart low. But upper and lower millstones must be joined together; one without the other is useless. Thus in the sinner’s confession, hope and fear should always be joined, because the sinner hopes in vain for mercy if he does not also fear justice. In vain did he fear justice if he does not also trust in mercy. Hence merely an upper millstone or a lower millstone alone may not be taken as a pledge.
One who preaches to a sinner should compose his sermon with such balance that he does not take away fear by offering hope alone or leave the sinner only in fear by taking away hope. For the upper or lower millstone is taken away if the preacher’s tongue separates either fear from hope or hope from fear in the sinner’s heart.

[AD 606] Paterius on Deuteronomy 24:13
Our brother becomes our debtor when our neighbor is shown to have committed some sin against us. For we call sins debts. Thus the sinful servant is told, “I have forgiven you your whole debt.” And each day in the Lord’s Prayer we pray, “Forgive us our debts as we forgive our debtors.” We receive a pledge from our debtor when we receive a confession of sin from him who is known to have sinned against us. His confession bids us to forgive the sin he has committed against us. If he confesses the sin he has committed and seeks pardon, he has already given a pledge for his debt. It is no wonder that we are bidden to return the pledge before sunset. Before the sun of justice sets in us because our hearts are grieved, we ought to accept his confession of sin. For it was he who made his confession of guilt to us. He has remembered that he has sinned against us. Let him soon feel forgiveness for his sin from us.

[AD 9999] Pseudo-Basil on Deuteronomy 24:19
[Of old,] it was wicked and unlawful to gather the sheaves left after the harvest, or to glean the vines after the vintage or to gather up the olives that remain after the trees were picked, because these things were to be left for the poor. Now if this was commanded those who were under the law, what shall we say of those who are in Christ? To them the Lord says, “Unless your justice abounds more than that of the scribes and Pharisees, you shall not enter into the kingdom of heaven.”