Deuteronomy 32:44-47

44Then Moses came with Joshua1 son of Nun and recited all the words of this song in the hearing of the people. 45When Moses had finished reciting all these words to all Israel, 46he said to them, “Take to heart all the words I have solemnly declared to you this day, so that you may command your children to carefully follow all the words of this law. 47For they are not idle words to you, because they are your life, and by them you will live long in the land that you are crossing the Jordan to possess.”