לְמַ֣עַן הָקִֽים־אֹתְךָ֩ הַיּ֨וֹם ׀ ל֜וֹ לְעָ֗ם וְה֤וּא יִֽהְיֶה־לְּךָ֙ לֵֽאלֹהִ֔ים כַּאֲשֶׁ֖ר דִּבֶּר־לָ֑ךְ וְכַאֲשֶׁ֤ר נִשְׁבַּע֙ לַאֲבֹתֶ֔יךָ לְאַבְרָהָ֥ם לְיִצְחָ֖ק וּֽלְיַעֲקֹֽב׃
supaya pada hari ini Ia menegakkan engkau menjadi umat-Nya dan Ia menjadi Allahmu, seperti yang telah difirmankan-Nya kepadamu dan seperti yang telah disumpahkan-Nya kepada nenek moyangmu, yaitu kepada Abraham, Ishak, dan Yakub.
Ramban
THE ETERNAL WILL ESTABLISH THEE FOR A HOLY PEOPLE UNTO HIMSELF AS HE HATH SWORN UNTO THEE. He applies the term “oath” to the covenant which He made with them at Mount Sinai concerning all these things, for there it was said, And ye shall be unto Me a kingdom of priests, and a holy nation.80Exodus 19:6. Or it may be that the covenant He made with Abraham to be a G-d unto thee and to thy seed after thee81Genesis 17:7. includes this one.82In other words, G-d’s pledge to Abraham that He would be a G-d to his seed after him includes what is stated here, The Eternal will establish thee for a holy people unto Himself, as He hath sworn unto thee. Similarly he said, that He may establish thee this day unto Himself for a people, and that He may be unto thee a G-d, as He spoke unto thee, and as He swore unto thy fathers, to Abraham, to Isaac, and to Jacob,83Further, 29:12. for the covenant was made for all of them.
Sforno
והייתי לכם לאלוקים, I will be a special G’d, yours alone. You will not have recourse to any other “leader,” any intermediary who will have an input into shaping your destiny. This is why your eternal existence will not again be threatened. This is the true significance of being בצלמי ובדמותי, “in My image (and in My form.”), meaning as it had been G’d’s original intention. This intention had been briefly realised again at the revelation at Mount Sinai, only to have again been aborted when the golden calf was made and the people danced around it. When G’d said in Exodus 6,7 “I will take you to be My people and to be your G’d, He had meant the restoration of man’s original perfection as he had been when first created, becoming the gift of the Jewish people at Mount Sinai.
On the other hand, Deuteronomy 29,12 when G’d also speaks of the result of the covenant being that He will be the G’d of the Jewish people, He did not refer to such lofty ideals at that time. At that point the Torah was satisfied with ensuring the uninterrupted function of the Tabernacle as the home of the Shechinah on earth. This was the reduced objective we had heard about in Exodus 29,45 when G’d spoke about making His residence among the Jewish people in that Tabernacle, not wherever they would be in areas beyond the Tabernacle. G’d would indeed be the Jewish people’s G’d, with all that this entails in terms of His personal providence, but He would not be described as dwelling “among” them, or “within” them, depending on how we want to understand the word בתוכם. However, we would be His people, if all our efforts would be designed to carry out G’d’s will to the extent that He had revealed it to us. After all, every people does no less than this for its king of flesh and blood.
On the other hand, Deuteronomy 29,12 when G’d also speaks of the result of the covenant being that He will be the G’d of the Jewish people, He did not refer to such lofty ideals at that time. At that point the Torah was satisfied with ensuring the uninterrupted function of the Tabernacle as the home of the Shechinah on earth. This was the reduced objective we had heard about in Exodus 29,45 when G’d spoke about making His residence among the Jewish people in that Tabernacle, not wherever they would be in areas beyond the Tabernacle. G’d would indeed be the Jewish people’s G’d, with all that this entails in terms of His personal providence, but He would not be described as dwelling “among” them, or “within” them, depending on how we want to understand the word בתוכם. However, we would be His people, if all our efforts would be designed to carry out G’d’s will to the extent that He had revealed it to us. After all, every people does no less than this for its king of flesh and blood.
Or HaChaim
והתיצבו באהל מועד, "and stand both of you in the Tent of Meeting, etc." This is the first instance where G'd commands Joshua to display a symbol of his new authority in Moses' presence. G'd did this by giving both Moses and Joshua simultaneous instructions using the plural התיצבו. We have explained this word as meaning "being appointed" in connection with Deut. 29,12. The word has a similar meaning in Samuel I 13,14 where Samuel tells King Saul ויצוהו ה׳ לנגיד על עמו, that in His heart G'd had already appointed someone else as leader of His people. This was some time before G'd ordered Samuel to anoint one of Yishai's sons as king. G'd's words to Joshua "for you will bring the children of Israel to the land, etc." (verse 22) are interpreted in Sanhedrin 8 as another such appointment of Joshua to a position of authority.