'Son's' in the Bible

And in the days of the wheat harvest, Reuben went and found mandrakes in the field and he brought them to Leah his mother. And Rachel said to Leah, "Please give me some of your son's mandrakes."

And she said to her, "[Is] your taking my husband [such] a small [thing] that you will also take the mandrakes of my son?" Then Rachel said, "Then he may sleep with you tonight in exchange for your son's mandrakes."

When Jacob came in from the field in the evening, Leah went out to meet him. And she said, "Come in to me, for {I have hired} you with my son's mandrakes." And he slept with her that night.

[As for] the nakedness of your son's daughter or your daughter's daughter, you must not expose their nakedness, because they [are] your nakedness.

You must not expose your daughter-in-law's nakedness; she [is] your son's wife; you must not expose her nakedness.

You must not expose the nakedness of a woman and her daughter, or her son's daughter, or her daughter's daughter; you must not take [her as wife] to expose her nakedness; they [are] {close relatives}--that [is] wickedness.