Deuteronomy 31:22

31:14-22 Moses and Joshua attended the Divine Majesty at the door of the tabernacle. Moses is told again that he must shortly die; even those who are most ready and willing to die, need to be often reminded of its coming. The Lord tells Moses, that, after his death, the covenant he had taken so much pains to make between Israel and their God, would certainly be broken. Israel would forsake Him; then God would forsake Israel. Justly does he cast those off who so unjustly cast him off. Moses is directed to deliver them a song, which should remain a standing testimony for God, as faithful to them in giving them warning, and against them, as persons false to themselves in not taking the warning. The word of God is a discerner of the thoughts and intents of men's hearts, and meets them by reproofs and correction. Ministers who preach the word, know not the imaginations of men; but God, whose word it is, knows perfectly.

Moses therefore wrote this song the same day,.... The same day it was dictated to him by divine inspiration; he wrote it, as Josephus says (d),"in hexameter verse, which he left in the holy Bible or book (the Pentateuch), containing (as he adds) a prophecy of things future, according to which all things have been done, and are done; and in nothing of it has he erred from the truth;''which is a very just account of it, and worthy of observation: and taught it the children of Israel; instructed them in the meaning of it, directed them to repeat it frequently, to lay it up in their memories, and often meditate upon it; as being a divine composition, and of great importance, as the consideration of it will make appear. (d) Antiqu. l. 4. c. 8. sect. 44.

A witness for me against them - i. e., an attestation from their own mouths at once of God's benefits, their own duties, and their deserts when they should fall away. Being in verse it would be the more easily learned and kept in memory. The use of songs for such didactic purposes was not unknown to the legislators of antiquity. Compare also the advice of Paul, "teaching and admonishing one another in psalms and hymns and spiritual songs" Colossians 3:16 .

19. Now therefore write ye this song—National songs take deep hold of the memories and have a powerful influence in stirring the deepest feelings of a people. In accordance with this principle in human nature, a song was ordered to be composed by Moses, doubtless under divine inspiration, which was to be learnt by the Israelites themselves and to be taught to their children in every age, embodying the substance of the preceding addresses, and of a strain well suited to inspire the popular mind with a strong sense of God's favor to their nation.

15 . If a man have two wives ] Cp. Jacob, Genesis 29:16 ff., Elkanah, 1 Samuel 1:2 . hated ] The extreme case, but covering others such as Jacob’s Genesis 29:30 f. 15–17. Of the right of the Firstborn If a man have two sons by different wives, one loved and one hated, and his firstborn is the son of the latter, he must not give the firstborn’s double portion to the son of the favourite.—Not in the direct address nor with any of D’s characteristic phrases; possibly therefore a previous law adopted by D, but hardly an ancient one, as it vetoes what was at least the occasional practice in early Israel. Like others it opens by putting a definite case ( if there be a man , etc., cp. Deuteronomy 21:18; Deuteronomy 21:22 , Deuteronomy 22:2 ; Deuteronomy 22:6 ; Deuteronomy 22:13 , etc.), it covers this alone, and hence is incomplete. We do not learn, e.g., whether the double portion included the family lands (Stade, Gesch . i. 392, and Buhl, Soc. Verhältn. d. Isr. 55 n . 2, think not) nor anything as to the children of concubines (cp. E, Genesis 21:10 f.). That in early Israel the firstborn had special rights, arising probably from the sacredness attached to all firstbirths (see Exodus 13:12 ), is proved by the term bekorah, birthright (J, Genesis 25:34 ) as well as by its metaphorical application to Israel (J, Exodus 4:22 , cp. Jeremiah 31:9 ). That the firstborn’s portion was a double one is implied the spiritual use of the phrase, in 2 Kings 2:9 (cp.

Moses and Joshua were to write the song, because they were both of them to strive to prevent the apostasy of the people; and Moses, as the author, was to teach it to the children of Israel, to make them learn it, that it might be a witness for the Lord (for Me) against the children of Israel. "This" is defined still further in Deuteronomy 31:20 , Deuteronomy 31:21 : if Israel, through growing satisfied and fat in its land, which was so rich in costly good, should turn to other gods, and the Lord should visit it in consequence with grievous evils and troubles, the song was to answer before Israel as a witness; i.e., not only serve the Lord as a witness to the people that He had foretold all the evil consequences of apostasy, and had given Israel proper warning (Knobel), but to serve, as we may see from Deuteronomy 31:20 , Deuteronomy 31:21 , and from the contents of the song, as a witness, on the one hand, that the Lord had conferred upon the people so many benefits and bestowed upon them such abundant blessings of His grace, that apostasy from Him was the basest ingratitude, for which they would justly be punished; and, on the other hand, that the Lord had not rejected His people in spite of the punishments inflicted upon them, but would once more have compassion upon them and requite their foes, and thus would sanctify and glorify Himself as the only true God by His judgments upon Israel and the nations.