Leviticus 26:20

20 And your strength shall be spent in vain: for your land shall not yield her increase, neither shall the trees of the land yield their fruits.

Leviticus 26:20 In-Context

18 And if ye will not yet for all this hearken unto me, then I will punish you seven times more for your sins.
19 And I will break the pride of your power; and I will make your heaven as iron, and your earth as brass:
20 And your strength shall be spent in vain: for your land shall not yield her increase, neither shall the trees of the land yield their fruits.
21 And if ye walk contrary unto me, and will not hearken unto me; I will bring seven times more plagues upon you according to your sins.
22 I will also send wild beasts among you, which shall rob you of your children, and destroy your cattle, and make you few in number; and your high ways shall be desolate.
The King James Version is in the public domain.