Deuteronomy 30:8-10

8Then you will again obey the Lord and keep all his commands that I am giving you today.

9“The Lord your God will then make you successful in everything you do. He will give you many children and numerous livestock, and he will cause your fields to produce abundant harvests, for the Lord will again delight in being good to you as he was to your ancestors.

10The Lord your God will delight in you if you obey his voice and keep the commands and decrees written in this Book of Instruction, and if you turn to the Lord your God with all your heart and soul.