Deuteronomy 28:13-14
28:13 The Lord will make you the head and not the tail, and you will always end up at the top and not at the bottom, if you obey his commandments which I am urging you today to be careful to do.
28:14 But you must not turn away from all the commandments I am giving you today, to either the right or left, nor pursue other gods and worship them.