Deuteronomy 31:20-22

Darby Translation

²⁰ For I shall bring them into the land which I swore unto their fathers, which floweth with milk and honey; and they will eat and fill themselves, and wax fat, and will turn unto other gods, and serve them, and despise me, and break my covenant.

²¹ And it shall come to pass, when many evils and troubles have befallen them, that this song shall testify against them as a witness; for it shall not be forgotten out of the mouths of their seed; for I know their imagination which they are forming already this day, before I bring them into the land which I have sworn [unto them].

²² And Moses wrote this song the same day, and taught it to the children of Israel.