Deuteronomy 31:20-21

20When I bring them into the land I swore to give their ancestors, a land flowing with milk and honey, they will eat their fill and prosper. They will turn to other gods and worship them, despising me and breaking my covenant.

21And when many troubles and afflictions come to them, this song will testify against them, because their descendants will not have forgotten it. For I know what they are prone to do, even before I bring them into the land I swore to give them.”