Deuteronomy
Chapter
Deuteronomy is a sequel to Numbers. Narrated in it are three speeches and two poems, spoken by Moses in Moab before the crossing of Jordan, in which he gives the Ten Commandments to the chosen people. A minor narrative in three of the chapters tells of the last days of Moses.
Deuteronomy 23
23:23 That which is gone out of thy lips thou shalt keep and perform; even a freewill offering, according as thou hast vowed unto the LORD thy God, which thou hast promised with thy mouth.