'Father in law' in the Bible

And the children of the Kenite, Moses' father-in-law, went up out of the city of palm trees, with the children of Judah, into the wilderness of Judah that lieth in the South of Arad, and dwelt among the people.

But Heber the Kenite was removed out of the Kenites, which was of the children of Hobab the father-in-law of Moses, and pitched his tent until he was come unto the oak of Zaananim, by Kadesh.

And his father-in-law, the damsel's father, kept him that he abode with him three days and so they ate and drank and lodged there.

Howbeit, the man stood up to depart: but his father-in-law compelled him to turn again and to tarry all night there.

And then the man arose to depart with his concubine and his lad. But his father-in-law, the damsel's father, said unto him, "Behold, the day goeth fast away and draweth toward even. Tarry all night: at the least way tarry this day here and let thine heart be merry. And tomorrow get you early upon your way and get thee to thy tent."