Deuteronomy 32:44-47

44Moses came and recited all the words of this song in the hearing of the people, he and Joshua son of Nun. 45When Moses had finished reciting all these words to all Israel, 46he said to them: “Take to heart all the words that I am giving in witness against you today; give them as a command to your children, so that they may diligently observe all the words of this law. 47This is no trifling matter for you, but rather your very life; through it you may live long in the land that you are crossing over the Jordan to possess.”

From the oremus Bible Browser https://bible.oremus.org v2.5.2 2 April 2021.