Leviticus 26:18-21

¹⁸And if ye will not yet for all this hearken to me, then I will punish you seven times more for your sins.

¹⁹And I will break the pride of your power; and I will make your heaven as iron, and your earth as brass:

²⁰And 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.

²¹And if ye shall walk contrary to me, and will not hearken to me, I will bring seven times more plagues upon you according to your sins.