Deuteronomy 4:3-6

4:3 You have witnessed what the Lord did at Baal Peor, how he eradicated from your midst everyone who followed Baal Peor. 4:4 But you who remained faithful to the Lord your God are still alive to this very day, every one of you. 4:5 Look! I have taught you statutes and ordinances just as the Lord my God told me to do, so that you might carry them out in the land you are about to enter and possess. 4:6 So be sure to do them, because this will testify of your wise understanding to the people who will learn of all these statutes and say, “Indeed, this great nation is a very wise people.”