'Father in law' in the Bible

And the sons of the Kenite, Moses' father-in-law, went up out of the city of palm trees with the sons of Judah into the wilderness of Judah, which is in the south of Arad. And they went and lived among the people.

And Heber the Kenite, of the sons of Hobab the father-in-law of Moses, had separated himself from the Kenites and pitched his tent toward the plain of Zaanaim, near Kedesh.

And his father-in-law, the girl's father, kept him. And he stayed with him three days. So they ate and drank and stayed there.

And when the man rose up to leave, his father-in-law urged him, and he stayed there again.

And when the man rose up to leave, he and his concubine, and his servant, his father-in-law, the girl's father said to him, Behold, now the day draws toward evening. Please stay all night. Behold, the day grows to an end. Stay here so that your heart may be merry. And tomorrow go early on your way, so that you may go to your tent.