Leviticus 26:20 KJV
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, King James Version
In context
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.