Deuteronomy 31:28-30

28Gather to me all the elders of your tribes, and your officers, that I may speak these words in their ears, and take heaven and earth to witness against them. 29For I know that after my death ye will utterly corrupt yourselves, and will turn aside from the way which I have commanded you; and mischief will befall you at the end of days; because ye do evil in the sight of Jehovah, to provoke him to anger through the work of your hands. 30And Moses spoke in the ears of the whole congregation of Israel the words of this song, until their conclusion.