Joshua 15:17

17. Othniel the son of Kenaz, the brother of Caleb The Septuagint, by mistake, here makes Othniel to be the brother of Caleb, thus making him marry his own brother’s daughter, his niece; a marriage if not unlawful, yet questionable. But the Septuagint corrects itself at Judges 1:13, where all versions agree that Kenaz was Caleb’s brother, and Othniel Kenaz’s son. Othniel therefore married his own cousin.

Gave him Achsah In being offered as a prize to the warriors it is probable that, in accordance with the spirit of the times, Achsah found a gratification to her feminine pride. The onset of battle was to be made all the more bravely for her beauty, rank, and dower. Of course, all the probabilities of winning lay within the circle of a few well-known heroes, and she would have the assurance of marrying the bravest man of Caleb’s princedom. And her best ambition was gratified, since Providence and Othniel’s bravery gave her the man of her probable choice certainly the man who raised her from the rank of daughter of the sheikh to that of wife of the ruler of all the united tribes. Judges 3:9.