Deuteronomy 31:28-29

28Assemble all your tribal elders and officers before me so that I may speak these words directly to them and call heaven and earth as witnesses against them.

29For I know that after my death you will become completely corrupt and turn from the path I have commanded you. Disaster will come to you in the future, because you will do what is evil in the Lord’s sight, angering him with what your hands have made.”