Moses explains that the commandments were given so that Israel might fear the Lord, keep his statutes and prolong their days, and so that it would go well with them and they would multiply in a land flowing with milk and honey. Then comes the Shema: the Lord our God, the Lord is one, and he is to be loved with all the heart, with all the soul and with all the strength.
These words are to be on the people's hearts. Parents will repeat them to their children and talk about them at home and on the road, when they lie down and when they rise. They will bind them as a sign on the hand, have them as frontlets between the eyes and write them on the doorposts of the house and on the gates.
Moses warns of the danger of prosperity. When the Lord brings them into a land with cities they did not build, houses full of goods they did not fill, wells they did not dig, vineyards and olive groves they did not plant, and they eat and are full, they must take care not to forget the Lord who brought them out of Egypt. They must fear him, serve him, swear by his name and not follow other gods, for he is a jealous God. They are not to test him as at Massah, but diligently keep his commandments and do what is right and good in his sight.
The chapter ends with a future question from a son about the meaning of the testimonies and laws. The father is to answer by telling the story: they were slaves of Pharaoh, the Lord brought them out with a mighty hand and commanded them to keep these laws, and that obedience will be their righteousness before the Lord.