But if he shall any ways {k} make them void after that he hath heard them; then he shall bear her iniquity.

(k) Not the same day he heard them, but some day after, the sin will be imputed to him and not to her.

Wesley's Notes

30:15 After he hath heard - And approved them by his silence from day to day, if after that time he shall hinder it, which he ought not to do: her non - performance of her vow shall be imputed to him, not to her.

Matthew Henry's Concise Commentary

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.