“The man who does these things will live by them”: See Leviticus 18:5, where these words encouraged the Israelites to obey the law in order to enjoy long life and prosperity in the land that God was giving them (see also Leviticus 26:3–13; Deuteronomy 28:1–14). Paul explains that if people seek to be made right with God through the law, they must obey all of its commands, not just some of them.