Deuteronomy 30:16-20

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. I call heaven and earth as witnesses today against you, that I have set before you life and death, blessing and cursing; therefore choose life, that both you and your descendants may live; that you may love the LORD your God, that you may obey His voice, and that you may cling to Him, for He is your life and the length of your days; and that you may dwell in the land which the LORD swore to your fathers, to Abraham, Isaac, and Jacob, to give them.”