Deuteronomy 31:20-22

Revised Standard Version

²⁰ For when I have brought them into the land flowing with milk and honey, which I swore to give to their fathers, and they have eaten and are full and grown fat, they will turn to other gods and serve them, and despise me and break my covenant. ²¹ And when many evils and troubles have come upon them, this song shall confront them as a witness (for it will live unforgotten in the mouths of their descendants); for I know the purposes which they are already forming, before I have brought them into the land that I swore to give.” ²² So Moses wrote this song the same day, and taught it to the people of Israel.