Deuteronomy 30:8-10

8And thou shalt return and obey the voice of Yhwh, and do all his commandments which I command thee this day.

9And Yhwh thy God will make thee plenteous in every work of thine hand, in the fruit of thy body, and in the fruit of thy cattle, and in the fruit of thy land, for good: for Yhwh will again rejoice over thee for good, as he rejoiced over thy fathers:

10If thou shalt hearken unto the voice of Yhwh thy God, to keep his commandments and his statutes which are written in this book of the law, and if thou turn unto Yhwh thy God with all thine heart, and with all thy soul.