Deuteronomy 31:19

19 Now therefore write you this canticle, and teach the children of Israel: that they may know it by heart, and sing it by mouth, and this song may be unto me for a testimony among the children of Israel.

Deuteronomy 31:19 Meaning and Commentary

Deuteronomy 31:19

Now, therefore, write ye this song for you
Which was now dictated by the Lord, and given to Moses and Joshua to write, which is recorded in ( Deuteronomy 32:1-43 ) :

and teach it the children of Israel;
teach them by it, instructing them in the meaning of it: thus it was usual in ancient times to write things in verses, that they might be the more pleasingly attended to and regarded, and be longer retained in memory; and especially this practice was used with children, and still is:

put it in their mouths;
oblige them to get it by heart, or lay it up in their memories, and repeat it frequently, that it may be familiar to them, and not be forgotten by them:

that this song may be a witness for me against the children of Israel;
when in times to come they shall call to mind how in this song they were cautioned against such and such sins, and what they were threatened with should befall them on account of them, and how all things have come to pass exactly as foretold in it; which would be a testimony for God of his goodness to them, of his tender care of them, and concern for them, in the previous cautions he gave them; and of his foreknowledge of future events; and a testimony against them for their ingratitude and other sins.

Deuteronomy 31:19 In-Context

17 And my wrath shall be kindled against them in that day: and I will forsake them, and will hide my face from them, and they shall be devoured: all evils and afflictions shall find them, so that they shall say in that day: In truth it is because God is not with me, that these evils have found me.

18 But I will hide, and cover my face in that day, for all the evils which they have done, because they have followed strange gods.

19 Now therefore write you this canticle, and teach the children of Israel: that they may know it by heart, and sing it by mouth, and this song may be unto me for a testimony among the children of Israel.

20 For I will bring them into the land, for which I swore to their fathers, that floweth with milk and honey. And when they have eaten, and are full and fat, they will turn away after strange gods, and will serve them: and will despise me, and make void my covenant.

21 And after many evils and afflictions shall have come upon them, this canticle shall answer them for a testimony, which no oblivion shall take away out of the mouth of their seed. For I know their thoughts, and what they are about to do this day, before that I bring them into the land which I have promised them.