Leviticus 26:18-21

18And if in spite of this you will not listen to me, then I will discipline you again sevenfold for your sins,

19and I will break the pride of your power, and I will make your heavens like iron and your earth like bronze.

20And your strength shall be spent in vain, for your land shall not yield its increase, and the trees of the land shall not yield their fruit.

21"Then if you walk contrary to me and will not listen to me, I will continue striking you, sevenfold for your sins.