Deuteronomy 31:29

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.