Making a vow to God in the old covenant was an absolute unbreakable commitment. (In the book of Judges 11-1- 40. Jephthan made a vow to God that if he helped him defeat the Ammonites he would sacrifice the first thing that came out of house. ** His daughter came out first. He ripped his cloth in grief. He had no sons. Now his daughter would have to serve God in the sanctuary never to Marry and he ...