'Mother in law' in the Bible

Then they wept aloud again; and Orpah kissed her mother-in-law [goodbye], but Ruth clung to her.

Boaz answered her, “I have been made fully aware of everything that you have done for your mother-in-law since the death of your husband, and how you have left your father and mother and the land of your birth, and have come to a people that you did not know before.

She picked it up and went into the city, and her mother-in-law saw what she had gleaned. Ruth also took out and gave to Naomi what she had saved after she [had eaten and] was satisfied.

Her mother-in-law said to her, “Where did you glean today? Where did you work? Blessed be the man who took notice of you.” So she told her mother-in-law with whom she had worked and said, “The name of the man with whom I worked today is Boaz.”

So she stayed close to the maids of Boaz, gleaning until the end of the barley and wheat harvests. And she lived with her mother-in-law.

Then Naomi her mother-in-law said to Ruth, “My daughter, shall I not look for security and a home for you, so that it may be well with you?

So she went down to the threshing floor and did just as her mother-in-law had told her.

When she came home, her mother-in-law said, “How did it go, my daughter?” And Ruth told her everything that the man had done for her.

She said, “He gave me these six measures of barley, and he said to me, ‘Do not go back to your mother-in-law empty-handed.’”