10 Bible Verses about Brothers in law

Then Judah said to Onan, "Go in to the wife of your brother and perform the duty of a brother-in-law to her, and raise up offspring for your brother."

"When brothers dwell together and one of them dies and has no son, the wife of the deceased shall not become the wife of a {man of another family}; her brother-in-law {shall have sex with her}, and he shall take her {to himself} as wife, and he shall perform his duty as brother-in-law [with respect to] her.

Moses said to Hobab son of Reuel the Midianite, the father-in-law of Moses, "We [are] setting out to the place that Yahweh said, 'I will give it to you'; go with us, and we will {treat you well} because {Yahweh promised} good concerning Israel." But he said to him, "I will not go. I will only go to my land and to my family." He said, "Please, do not abandon us because you know our encampment in the desert, and {you should be our guide}.read more.
Moreover, if you go with us, the good that Yahweh will do to us we will do to you."

But if the man [does] not want to take his sister-in-law, then his sister-in-law shall go up to the gate, to the elders, and she shall say, 'My brother-in-law refused {to perpetuate his brother's name} in Israel, [for] he is not willing {to marry me}.'

And Heber the Kenite [was] separated from [the other] Kenites, [that is], from the descendants of Hobab the father-in-law of Moses. And {he was encamped} at Elon-bezaanannim, which [is] near Kedesh.

You must not expose the nakedness of your brother's wife; she [is] your brother's nakedness.

Moses said to Hobab son of Reuel the Midianite, the father-in-law of Moses, "We [are] setting out to the place that Yahweh said, 'I will give it to you'; go with us, and we will {treat you well} because {Yahweh promised} good concerning Israel."

saying, "Teacher, Moses said if someone dies without having children, his brother is to marry his wife and {father} descendants for his brother.

And Moses went, and he returned to Jethro his father-in-law, and he said to him, "Please let me go, and let me return to my brothers who [are] in Egypt, and let me see whether they [are] yet alive. And Jethro said to Moses, "Go in peace."

The descendants of Hobab [the] Kenite, Moses' father-in-law, went up with the descendants of Judah from the city of palms [into] the wilderness of Judah, which [is] in [the] Negev [near] Arad. And they went and settled with the people.