Leviticus 26:18-21

18If also after these things you do not obey Me, then I will punish you 1seven times more for your sins. 19I will also 2break down your pride of power; I will also make your sky like iron and your earth like bronze. 203Your strength will be spent uselessly, for your land will not yield its produce and the trees of the land will not yield their fruit.

21‘If then, you 45act with hostility against Me and are unwilling to obey Me, I will increase the plague on you 6seven times according to your sins.