And the LORD 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 the LORD will again rejoice over thee for good, as he rejoiced over thy fathers: If thou shalt hearken unto the voice of the LORD thy God, to keep his commandments and his statutes which are written in this book of the law, [and] if thou turn unto the LORD thy God with all thine heart, and with all thy soul.
As we devote our lives to serve God, He blesses the fruit of our labours with great delight and pleasure. Just as He rejoices to bless us, so also Christians should desire to serve Him. This unfathomable pleasure in serving is solely founded on the Word of God and living in accordance to it. When we follow His commands with all our heart, soul, and mind, God prospers our way over an abundance.