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.
“When a young woman still living in her father’s household makes a vow to the Lord or obligates herself by a pledge
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.