'Daughters in law' in the Bible

He had thirty sons, and thirty daughters whom he gave in marriage outside the family, and he brought in thirty daughters [-in-law] from outside for his sons. He judged Israel for seven years.

Then she set out with her daughters-in-law to return from the country of Moab, for she had heard in Moab how the Lord had taken care of His people [of Judah] in giving them food.

So she left the place where she was living, her two daughters-in-law with her, and they started on the way back to the land of Judah.

But Naomi said to her two daughters-in-law, “Go back, each of you return to your mother’s house. May the Lord show kindness to you as you have shown kindness to the dead and to me.

I will not punish your daughters when they play the prostituteOr your brides when they commit adultery,For the men themselves slip away with prostitutes,And they offer sacrifices with temple prostitutes [who give their bodies in honor of the idol].So the people without understanding [stumble and fall and] come to ruin.