Cursed is he that confirmeth not. Although it was God's purpose to summon the consciences of all men before Him, and, in order that they might not only fear human judgments, He designedly threatened them with the punishment of secret sins, yet the conclusion, which is now added, extends the same judgment to all iniquities of whatever kind. Nay, He briefly declares, that whosoever shall not perform what the Law requires, are accursed. From whence Paul rightly infers, that "as many as are of the works of the Law are under the curse." (Galatians 3:10.) For let the most perfect man come forward, and, although he may have striven ever so diligently to keep the Law, he will have at least offended in some point or other; since the declaration of James must be borne in mind, "Whosoever shall keep the whole law, and yet offend in one point, he is guilty of all;" for he that forbade murder and adultery, forbade theft also. (James 2:10, 11.) Paul indeed does not quote the very words of Moses, for he thus cites his testimony; "Cursed is every one that continueth not in all things which are written in the book of the law to do them," (Galatians 3:10;) but there is no difference in the sense, since all are here condemned without exception, who have not confirmed the Law of God, so as to fulfill to the uttermost whatever it contains. Whence if is clear that, in whatever respect the deficiency betrays itself, it brings men under the curse; and to this the Israelites are commanded to assent, so as to acknowledge that they were all without exception lost, since they were involved in the curse. And now-a-days, also, it is necessary that we should all to a man be struck with the same despair, in order that, embracing the grace of Christ, we should be delivered from this melancholy state of guilt; since he was made accursed for us, that He might redeem us from the curse of the Law. (Galatians 3:13.)

That confirmeth not all the words of this law - The word כל col, All, is not found in any printed copy of the Hebrew text; but the Samaritan preserves it, and so do six MSS. in the collections of Kennicott and De Rossi, besides several copies of the Chaldee Targum. The Septuagint also, and St. Paul in his quotation of this place, Galatians 3:10. St. Jerome says that the Jews suppressed the word, that it might not appear that they were bound to fulfill All the precepts in the law of Moses.
1. Dr. Kennicott, who contends that it was the Decalogue that was written on the stones mentioned in this chapter, says, "If we examine these twelve curses, they will appear to contain a strong enforcement of the ten commands; and it is highly probable that the curses were here proclaimed principally to secure obedience to the commandments, as will be made more clear by the table: -
The first, second, third, and fourth Commandments
Galatians 3:15 - Cursed be the man that maketh any graven or molten image, an abomination to the Lord, etc.
The fifth Commandment
Galatians 3:16 - Cursed be he that setteth light by his father or his mother.
The sixth Commandment
Galatians 3:25 - Cursed be he that taketh reward to slay an innocent person.
Galatians 3:24 - Cursed be he that smiteth his neighbor secretly.
Galatians 3:18 - Cursed be he that maketh the blind to wander out of the way.
The seventh Commandment
Galatians 3:20 - Cursed be he that lieth with his father's wife.
Galatians 3:21 - Cursed be he that lieth with any beast.
Galatians 3:22 - Cursed be he that lieth with his sister.
Galatians 3:23 - Cursed be he that lieth with his mother-in-law.
The eighth Commandment
Galatians 3:17 - Cursed be he that removeth his neighbor's landmark.
The ninth Commandment
Galatians 3:19 - Cursed be he that perverteth the judgment of the stranger, fatherless, and widow.
The tenth Commandment
Galatians 3:26 - Cursed be he that confirmeth not all the words of this law to do them."
Many will think this arrangement fanciful; and the analogy far from being natural.
2. In pronouncing these blessings and curses, the Talmud says, six tribes went up towards the top of Mount Gerizim, and six towards the top of Mount Ebal; and the priests and the Levites, and the ark stood beneath in the midst. The priests encompassed the ark, and the Levites stood around about the priests; and all Israel on this side and on that; see Joshua 8:33. Then they turned their faces towards Mount Gerizim and pronounced the blessings, Blessed be the man, etc., and those on each side answered Amen! then they turned their faces towards Mount Ebal, and pronounced the curse, Cursed be the man, etc., and those on each side answered Amen! till they had finished the blessings and the curses; and afterwards they brought stones and built an altar. Some suppose that the Levites were divided into two grand bodies, part standing at or on Mount Gerizim, and part on Mount Ebal, and that with each division were some of the priests. The whole Dr. Parry supposes to have been arranged in the following manner: -
3. It is worthy of remark that Moses assigns to the children of Rachel and Leah, the two mothers of the family, the office of blessing the people, as being the most honorable; and these he places on Mount Gerizim. On the contrary, he assigns the office of cursing the people to the sons of Zilpah and Bilhah, as being the least honorable office; but with these he joins Zebulun, the youngest of Leah's sons, and Reuben, the eldest. As there must be six tribes on each mountain, it was necessary that while six of the sons of Rachel and Leah, the legitimate wives, should be employed in blessing, two tribes descending from the same mothers should be joined to the other four who proceeded from the handmaids in order to make up the number six. The question is, which two of the more honorable tribes should be joined to the four least honorable, in order to complete the number six? Zebulun is chosen, because being the sixth and youngest of all Leah's sons, he was the least honorable of those who proceeded from the free woman; and Reuben is chosen, who, though the eldest of Jacob's sons, and entitled to the birthright, had lost it by his transgression. And hence he, in his posterity, was degraded, and was obliged to pronounce the curse, Cursed is he that lieth with his father's wife. See Genesis 49:3-4 (note), and Genesis 35:22 (note), and the notes on both places.
4. It is strange how long the disgrace consequent on some flagrant transaction of a parent may cleave to his posterity! See this exemplified in the posterity of Reuben. Hence, with great propriety we may pray, Remember not, Lord, our offenses, nor the offenses of our forefathers; neither take thou vengeance of our sins." - Litany. For the offenses of our forefathers may be so remembered against their posterity, that God, in the course of his providence, may still keep up a controversy in secular matters with the descendants (though even pious) of unholy ancestors; for as all men are seminally included in the parents, they come into the world depraved with their depravity, and in some sort liable to their curses, though not so far as to affect their eternal interests without the addition of their own personal offenses. Thus God may be said to visit the sins of the fathers upon the children, even unto the third and fourth generation; as he may have a controversy with the land for the evil which has been done in it, and for which no proper atonement has been made. Why is it that at this moment Spain is suffering the most afflictive and cruel desolations? What has she done to merit all this? Is she more wicked than all the European nations because she suffers such things? Here is the mystery: Nations, as such, can only be punished in this world. Look at the torrents of innocent blood shed by their ancestors in South America 300 years ago; and see now and adore the awful hand of retributive justice! (December, 1811). We often see persons tried and afflicted, for whose distresses we can give no legitimate reason. We find others who, though they rise early, sit up late, work hard, eat the bread of carefulness, and have a full knowledge of their business, yet never get on in life. Who can account for this? Shall we say that some injustice in their ancestors has brought down the displeasure of God upon the earthly possessions that descended in that line, so that the goods ill gotten shall never be permitted to multiply? I knew an honest man, dead many years since, who by great diligence, punctuality, and integrity in his business, had acquired considerable property. Some time before his death, having by will divided his substance among his sons and his daughters, he expressed himself thus: "Children, you need not fear the curse of God on this property; every penny of it was honestly earned." Many years have since elapsed, and the blessing of God has been in the basket and in the store of all his children. Parents! leave nothing behind you that you cannot say before your God, with a clear conscience, "This has been honestly earned." If all bequests of a contrary description were to be deducted from last wills and testaments, the quantum of descending property would be, in many cases, small indeed.

Cursed be he that confirmeth not all the words of this law to do them,.... That is, who does not perfectly perform all that the law requires, and continues to do so; for the law requires obedience, and that perfect and constant, and in failure thereof curses, in proof of which the apostle produces this passage; see Gill on Galatians 3:10, for the reconciliation of these Scriptures, as to what seeming difference there is between them:
and all the people shall say, Amen; See Gill on Deuteronomy 27:15; See Gill on Deuteronomy 27:16.

Confirmeth not - Or, performeth not. To this we must all say, Amen! Owning ourselves to be under the curse, and that we must have perished for ever, if Christ had not redeemed us from the curse of the law, by being made a curse for us.