Deuteronomy 32:44-47

44Then Moses came and spoke all the words of this song in the hearing of the people, he and Joshua the son of Nun.

45When Moses had finished speaking all these words to all [the people of] Israel,

46he said to them, “Take to heart all the words of warning which I am speaking to you today; and you shall command your children to observe them carefully—to do all the words of this law.

47For it is not an empty or trivial matter for you; indeed it is your [very] life. By [honoring and obeying] this word you will live long in the land, which you are crossing the Jordan to possess.”