Deuteronomy 28:13-15

13The Lord will make you the head (leader) and not the tail (follower); and you will be above only, and you will not be beneath, if you listen and pay attention to the commandments of the Lord your God, which I am commanding you today, to observe them carefully.

14Do not turn aside from any of the words which I am commanding you today, to the right or to the left, to follow and serve other gods.

15“But it shall come about, if you do not listen to and obey the voice of the Lord your God, being careful to do all His commandments and His statutes which I am commanding you today, then all these curses will come upon you and overtake you: