Deuteronomy 30:16-18

in that I command you today to love the LORD your God, to walk in His ways, and to keep His commandments, His statutes, and His judgments, that you may live and multiply; and the LORD your God will bless you in the land which you go to possess. But if your heart turns away so that you do not hear, and are drawn away, and worship other gods and serve them, I announce to you today that you shall surely perish; you shall not prolong your days in the land which you cross over the Jordan to go in and possess.