NOTES for Num 29:40-30:16
The statute about vows before the Lord and responsibility for fulfilling them reveals to us an important aspect of life in a family or in any community where there is someone who bears greater responsibility than others. For God, right relationships in the family turn out to be more important than the fulfillment of the vow itself. Therefore a husband, or the father of an underage daughter, can annul her vow to God. Here, as always, God calls us to be more attentive to His word than to the formal fulfillment of our "duty" before Him.