Deuteronomy 30:18

18 you will most certainly die. You won't last long in the land that you are crossing the Jordan to enter and possess.

Deuteronomy 30:18 Meaning and Commentary

Deuteronomy 30:18

I denounce unto, you this day that ye shall surely perish,
&c.] By one judgment or another; this he most solemnly averred, and it might be depended upon that it would certainly be their case; see ( Deuteronomy 4:26 ) ;

[and that] ye shall not prolong [your] days upon the land, whither
thou passest over Jordan to go to possess it;
but be cut short by death, of one kind or another, by sword, or famine, or pestilence, or be carried into captivity; one or other of which were frequently their case.

Deuteronomy 30:18 In-Context

16 And I command you today: Love God, your God. Walk in his ways. Keep his commandments, regulations, and rules so that you will live, really live, live exuberantly, blessed by God, your God, in the land you are about to enter and possess.
17 But I warn you: If you have a change of heart, refuse to listen obediently, and willfully go off to serve and worship other gods,
18 you will most certainly die. You won't last long in the land that you are crossing the Jordan to enter and possess.
19 I call Heaven and Earth to witness against you today: I place before you Life and Death, Blessing and Curse. Choose life so that you and your children will live.
20 And love God, your God, listening obediently to him, firmly embracing him. Oh yes, he is life itself, a long life settled on the soil that God, your God, promised to give your ancestors, Abraham, Isaac, and Jacob.