Deuteronomy 16:15

16:15 You are to celebrate the festival seven days before the Lord your God in the place he chooses, for he will bless you in all your productivity and in whatever you do; so you will indeed rejoice!

Deuteronomy 28:13

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.