Joshua 15:16

Which is to be understood with some conditions, as, if he were one who could marry her by God's law; for every promise contrary to that is void; and if she were willing; for though parents had a great power over their children, they could not force them to marry any person against their own wills. He might otherwise be an unfit and unworthy person: but this was no ordinary motion propounded to the imitation of others, but a Divine impulse, that Othniel's valour might be more manifest, and so the way prepared for his future government of the people, Judges 3:9.