וְהִבְדִּיל֤וֹ יְהוָה֙ לְרָעָ֔ה מִכֹּ֖ל שִׁבְטֵ֣י יִשְׂרָאֵ֑ל כְּכֹל֙ אָל֣וֹת הַבְּרִ֔ית הַכְּתוּבָ֕ה בְּסֵ֥פֶר הַתּוֹרָ֖ה הַזֶּֽה׃
Yang Mahakekal akan memisahkan dia dari segala suku Israel untuk ditimpa malapetaka, sesuai dengan segala kutuk perjanjian yang tertulis dalam kitab Taurat ini.
Ibn Ezra
wrath will fume The fire of wrath shall bum him until smoke appears. If he is an individual, he will die immediately; if it is a whole family, then all of the curse will alight — i.e., the curse shall alight upon that family, until its name is obliterated; if it is a whole tribe, then God will single it out for disaster. Each enumerated consequence applies to a different possibility, like “…shall be dedicated to God , and I shall offer it up for a burnt offering” [Judges 11: 31], as I have explained [comment on Judges 11: 31].
Da'at Zekenim
הנסתרות לה' אלוקינו, “concealed acts concern the Lord our G–d;” seeing that the Torah had written in verse 20 of our chapter that G–d singles out individual sinners for retribution,” and verse 21 sounds as if the sins of a single individual could cause G–d to react angrily against the whole people, or at least against a whole family all on account of that single rebellious Jew, Moses now reassures the people that precisely because He is omniscient and knows what goes on in the hearts of each one of us, He will deal with the individual who is guilty and not engage in punishing the innocent as “collateral damage.” However, sins committed openly, and ignored by the judiciary, thereby constituting collective guilt by the people who had appointed corrupt judges, will become the subject of what for the uninitiated looks like collective punishment. In fact, the retribution for openly committed sins and tolerated by the courts, will result in the punishment extending beyond a single generation as long as we do not wipe out the phenomenon of open rebellion against the covenant that the whole people had voluntarily entered into with Hashem. The Talmud in tractate Sanhedrin, folio 43 points out that the dots above the letters לנו ולבנינו and above the letter ע of the word עד, are to inform us that as long as the Israelites had not crossed the river Jordan and been on sacred ground, G–d had not punished anyone for sins committed in private, not witnessed by even family members. The reason for this was that only after crossing the Jordan did the Jews accept the Torah [most of whose commandments did not apply outside the Holy land. Ed.] individually and collectively, so that each Israelite became responsible also for the sins committed by his fellow Jew. At that point what is written the words לנו ולבנינו, “for us and our children,” became applicable. If you were to query that if the above were correct, why is the last dot on the word על instead of on ה' אלוקינו, perhaps the reason is that it would be inappropriate to do this when it is subject to being erased. The words: lashem elokeynu in Hebrew including the tetragram that I cannot spell out here, comprise eleven letters, and that is why our sages place 11 dots to hint to us that this is where the dots really should have been. [Since no Israelite who had not yet crossed the river Jordan ever saw a Torah scroll with these eleven dots, I find the interpretation offered quite irrelevant. Ed.] According to a text known as massoret hag’dolah, the dots are attributed to when Ezra had to rewrite the Torah after the redemption when different scrolls had variations in the text, and the time would come when Moses would challenge him why he had not done it differently, he would explain that because of his doubts he had placed the dots on top. If Moses would be satisfied with the way Ezra had done it, it would be easy to erase the dots without harming the text of the Torah scroll. From this it is clear that Ezra had his doubts about G–d not holding us responsible for not interfering when becoming aware of sins committed prior to crossing the Jordan.
Ramban
‘VEHAYAH’ FOR A WITNESS. This means, “And let the Holy One, blessed be He, serve as a witness.” These are the words of Rashi. But this is not the usual sense of the expression. Rather, Laban is saying, “And let the covenant be for a witness between us, for he who violates it should be cursed with all the curses of the covenant,”240Deuteronomy 29:20. similar in meaning to the verse, And they shall be upon thee for a sign and for a wonder.241Ibid., 28:46. The meaning of the verse here may be: “Let us establish a covenant by a permanent thing which will serve as a witness between us.” For this reason, Jacob set up a stone as a pillar, and this is the meaning of that which he said, This stone-heap be witness, and this pillar be witness.242Verse 52 here. A similar meaning is found in the verse, And Joshua said unto all the people: Behold, this stone shall be a witness against us.243Joshua 24:27.