Leviticus 26 - 27

The Lord outlines the multitudes of His blessings when the people keep and follow His laws, and the multiplication of His punishments when the people are pervasively disobeying them.

Chapter 27 deals with the voluntary promises that people make to the Lord, in dedicating either themselves to Him, or something they own, and the costs they will have to pay if they later decide to go back on their promise.