Deuteronomy 31:20-22

New King James Version

²⁰ When I have brought them to the land flowing with milk and honey, of which I swore to their fathers, and they have eaten and filled themselves ^(A)and grown fat, ^(B)then they will turn to other gods and serve them; and they will provoke Me and break My covenant. ²¹ Then it shall be, ^(C)when many evils and troubles have come upon them, that this song will testify against them as a witness; for it will not be forgotten in the mouths of their descendants, for ^(D)I know the inclination ^(E)of their behavior today, even before I have brought them to the land of which I swore to give them.”

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