Mother-in-law in the Bible

Matthew 10:35 For I am come to set a man at variance against his father, and the daughter against her mother, and the daughter in law against her mother in law.

Leviticus 18:17 Thou shalt not uncover the nakedness of a woman and her daughter, neither shalt thou take her son's daughter, or her daughter's daughter, to uncover her nakedness; for they are her near kinswomen: it is wickedness.
Leviticus 20:14 And if a man take a wife and her mother, it is wickedness: they shall be burnt with fire, both he and they; that there be no wickedness among you.
Deuteronomy 27:23 Cursed be he that lieth with his mother in law. And all the people shall say, Amen.

Ruth 1:14-17 And they lifted up their voice, and wept again: and Orpah kissed her mother in law; but Ruth clave unto her. 15 And she said, Behold, thy sister in law is gone back unto her people, and unto her gods: return thou after thy sister in law. 16 And Ruth said, Intreat me not to leave thee, or to return from following after thee: for whither thou goest, I will go; and where thou lodgest, I will lodge: thy people shall be my people, and thy God my God: 17 Where thou diest, will I die, and there will I be buried: the LORD do so to me, and more also, if ought but death part thee and me.

Mark 1:30-31 But Simon's wife's mother lay sick of a fever, and anon they tell him of her. 31 And he came and took her by the hand, and lifted her up; and immediately the fever left her, and she ministered unto them.