Leviticus 26:18-21

18The people may not obey God even after this. If they do not, God will punish them seven times more strongly.

19He will make them ashamed. He will not send any rain and the land will be hard and dry.

20Even if they do a lot of work, no grain will grow. No fruit will grow on the trees.

21The people may still not listen to God. If they do not, he will be seven times more angry. If they do not obey him, he will cause their lives to be seven times more difficult.