Numbers 30:9 (BSB)

Every vow a widow or divorced woman pledges to fulfill is binding on her.

From Numbers 30. Also in the ESV.

Commentary on Numbers 30:9

• John Calvin (Reformed), Calvin's Commentaries on Numbers 30:9: 9. But every vow of a widow. I have stated why widows are expressly named, viz., lest a woman should think that by a second marriage she would escape, as being no longer free, and again under the yoke; since by such subtle excuses people often extricate themselves.
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Numbers 30:3-16: It is here taken for granted that all such persons as are sui juris - at their own disposal, and are likewise of sound understanding and memory, are bound to perform whatever they vow that is lawful and possible; but, if the person vowing be under the dominion and at the disposal of another, the case is different. Two cases much alike are here put and determined: - I.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Numbers 30:9: But every vow of a widow,.... The Scripture speaks, as Jarchi says, of a widow from marriage, or that has been married, but a widow from espousals (or that has been only espoused), the husband dead, the power is transmitted, and returns to the father; and with respect to such a case, it is said in the Misnah (y)"if the father (of such a betrothed...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Numbers 30:9: every vow of a widow--In the case of a married woman, who, in the event of a separation from her husband, or of his death, returned, as was not uncommon, to her father's house, a doubt might have been entertained whether she was not, as before, subject to paternal jurisdiction and obliged to act with the paternal consent.