Deuteronomy 31:28

Deu 31:28-30. Gather unto me all the elders — It is probable that Moses, having spoken to the people what he was commanded, dismissed them again till he should write the following song; which having done, he summoned the elders (and people, Deu 31:30) to deliver to them from his own mouth what he had written. Moses spake in the ears of all the congregation — Pronounced himself, with an audible voice, to the representatives of the congregation, and afterward ordered to be repeated to the people of every tribe, the following song or hymn.

Joseph Benson's Commentary on the Old and New Testaments (1811–1818) — public domain. Text from a community e-Sword module.

As governors, judges and magistrates.

Geneva Bible (1599) marginal notes — public domain. Text via Bolls.life.

28. Assemble] Imperative Pl. See on Deu_31:12, and Deu_5:22.

elders of your tribes, etc.] LXX heads of your tribes, adding and your judges, and some LXX codd. also add elders. Cp. Deu_5:23, Deu_29:10 (9).

these words] Though this phrase usually refers to what precedes, it is more probable that here what follows, i.e. the Song, is meant, as indubitably is the case in Exo_20:1.

The Cambridge Bible for Schools and Colleges (gen. ed. J. J. S. Perowne; Cambridge University Press, 1878–1918) — public domain. Text from a community e-Sword module.

For I know that after my death,.... Which was just at hand, some time after that, not immediately; this he knew by a spirit of prophecy, namely, what follows:

ye will utterly corrupt yourselves; their ways, works, and manners, and so themselves; corrupt the worship of God by making idols, and serving them, which is the corruption chiefly intended:

and turn aside from the way which I have commanded you: from the way of the commandments of God, which Moses had given them in his name, and in which they were directed to walk; but, as here foretold, would wander and swerve from them as they did:

and evil will befall you in the latter days; not only in the times of the judges, and in the time of the Babylonish captivity, but in their present captivity, as they call it; which shows that the following song has things in it which respect times at a great distance, and even the present ones, and yet to come:

because ye will do evil in the sight of the Lord, to provoke him to anger through the work of your hands; their idols, idolatry being the evil chiefly designed, which is of all things the most provoking of the Lord.

John Gill's Exposition of the Whole Bible (1746–1763) — public domain (CC PDM 1.0). Text via the HelloAO Bible API.

28. Gather unto me all the elders — Moses now, after handing over the book of the law, directs that the elders of the tribes and all in official position be gathered around him. A general assembly representing the entire nation now come together to listen to the unequalled ode which bears the name of the Song of Moses.

Daniel D. Whedon (gen. ed.), Commentary on the Old and New Testaments (1874–1909) — public domain. Text from a community e-Sword module.

Call heaven and earth to record against them. (cf. Deu_32:1) These words; the words of his charge, and especially the song he had composed, and which it would be the business of these officers to teach to the congregation.

The Pulpit Commentary (1880–1919), ed. H.D.M. Spence-Jones & Joseph S. Exell — public domain. Text from a community e-Sword module.

Directly after handing over the book of the law, Moses directed the elders of all the tribes, together with the official persons, to gather round him, that he might rehearse to them the ode which he had written fore the people. The summons, "gather unto me," was addressed to the persons to whom he had given the book of the law. The elders and officers, as the civil authorities of the congregation, were collected together by him to hear the ode, because they were to put it in the mouth of the people, i.e., to take care that all the nation should learn it. The words, "I will call heaven and earth as witnesses against you," refer to the substance of the ode about to be rehearsed, which begins with an appeal to the heaven and the earth (Deu 32:1). The reason assigned for this in Deu 31:29 is a brief summary of what the Lord had said to Moses in Deu 31:16-21, and Moses thought it necessary to communicate to the representatives of the nation. "The work of your hands" refers to the idols (vid., Deu 4:28).

Keil & Delitzsch — Biblical Commentary on the Old Testament (1861–1891) — public domain (CC PDM 1.0). Text via the HelloAO Bible API. (Old Testament only.)

הקהילו אלי ASSEMBLE UNTO ME [ALL THE ELDERS OF YOUR TRIBE] — They did not, however, blow the trumpets that day to call the congregation together (as is prescribed in Numbers 10:3), because it states (Numbers 10:2) “Make for thee [two trumpets of silver]” (which Rashi explains to mean that no one should use them except himself), and he had not empowered Joshua to use them. Indeed they were hidden away even during his (Moses) lifetime — on the day of his death, thus fulfilling the words of the text, (Ecclesiastes 8:8) “There is no authority on the day of death” (cf. Midrash Tanchuma, Vayechi 2 on ויחי and ‎Midrash Tanchuma, Beha'alotcha 10 on בהעלתך).‎

ואעידה בם את השמים ואת הארץ I WILL CALL THE HEAVEN AND THE EARTH AS WITNESSES AGAINST THEM — But if you ask, “Behold he has already above (Deuteronomy 30:19) called heaven and earth as witnesses: “I call [the heaven and the earth] as witnesses this day against you etc.”?! Then I reply: There he said this to the Israelites (he told them that He would do this), but now he intends to say (Deuteronomy 32:1) “Give ear, O ye heavens, [and I will speak; and hear earth] etc.”, thus calling them as witnesses.

Rashi on the Tanakh — English translations: “The Judaica Press complete Tanach with Rashi, translated by A. J. Rosenberg” (CC BY 4.0); “Pentateuch with Rashi's commentary by M. Rosenbaum and A.M. Silbermann, 1929-1934” (public domain); “The Metsudah Tanach series, Lakewood, N.J” (CC BY 4.0); and “The Book of Joshua, Metsudah Publications, 1997” (CC BY 4.0). Text via Sefaria.