3 "If a young woman makes a vow to the Lord or a pledge under oath while she is still living at her father's home, 4 and her father hears of the vow or pledge and does not object to it, then all her vows and pledges will stand. 5 But if her father refuses to let her fulfill the vow or pledge on the day he hears of it, then all her vows and pledges will become invalid. The Lord will forgive her because her father would not let her fulfill them. 6 "Now suppose a young woman makes a vow or binds herself with an impulsive pledge and later marries. 7 If her husband learns of her vow or pledge and does not object on the day he hears of it, her vows and pledges will stand. 8 But if her husband refuses to accept her vow or impulsive pledge on the day he hears of it, he nullifies her commitments, and the Lord will forgive her.
Matthew Henry's Commentary on Numbers 30:3-8
Commentary on Numbers 30:3-16
(Read Numbers 30:3-16)
Two cases of vows are determined. The case of a daughter in her father's house. When her vow comes to his knowledge, it is in his power either to confirm it or do it away. The law is plain in the case of a wife. If her husband allows her vow, though only by silence, it stands. If he disallows it, her obligation to her husband takes place of it; for to him she ought to be in subjection, as unto the Lord. The Divine law consults the good order of families. It is fit that every man should bear rule in his own house, and have his wife and children in subjection; rather than that this great rule should be broken, or any encouragement be given to inferior relations to break those bonds asunder, God releases the obligation even of a solemn vow. So much does religion secure the welfare of all societies; and in it the families of the earth have a blessing.