Numbers 30:3-8 New International Version (NIV)
3 “When a young woman still living in her father’s household makes a vow to the Lord or obligates herself by a pledge 4 and her father hears about her vow or pledge but says nothing to her, then all her vows and every pledge by which she obligated herself will stand. 5 But if her father forbids her when he hears about it, none of her vows or the pledges by which she obligated herself will stand; the Lord will release her because her father has forbidden her.
6 “If she marries after she makes a vow or after her lips utter a rash promise by which she obligates herself 7 and her husband hears about it but says nothing to her, then her vows or the pledges by which she obligated herself will stand. 8 But if her husband forbids her when he hears about it, he nullifies the vow that obligates her or the rash promise by which she obligates herself, and the Lord will release her.
At this time, parents could overrule their children’s vows. Young adults needed to be protected from foolish promises or costly commitments. Today, young people still living at home should seek their parent’s help when making decisions. A parent experience cold save a child from a serious mistake. If you have a young adult living with you, exercise cautious and grace filled authority. There is a fine line by letting young adults learn from mistakes, and yet a parents help in protecting their children from disaster.