10 Bible Verses about Brothers in law

Then Judah told Onan, “Go in to your brother’s widow, and perform your duty as a brother-in-law [under the levirate marriage custom]; [be her husband and] raise children for [the name of] your brother.”

“If brothers are living together and one of them dies without a son, the widow of the deceased shall not be married outside the family to a stranger. Her husband’s brother shall be intimate with her after taking her as his wife and perform the duty of a husband’s brother to her.

Then Moses said to Hobab the son of Reuel the Midianite, Moses’ father-in-law, “We are going to the place of which the Lord said, ‘I will give it to you.’ Come with us, and we will be good to you, for the Lord has promised good [things] concerning Israel.” But Hobab [Moses’ brother-in-law] said to him, “I will not go; I will return to my own land and to my family.” Then Moses said, “Please do not leave us, for you know how we are to camp in the wilderness, and you will serve as eyes for us [as we make our trek through the desert]. read more.
So if you will go with us, it shall be that whatever good the Lord does for us, we will do the same for you.”

But if the man does not want to marry his brother’s [widowed] wife, then she shall go up to the gate [of the city, where court is held] to the elders, and say, ‘My brother-in-law refuses to continue his brother’s name in Israel; he is not willing to perform the duty of a husband’s brother.’

Now Heber the Kenite had separated himself from the Kenites, from the sons of Hobab the father-in-law of Moses, and had pitched his tent as far away as the terebinth tree in Zaanannim, which is near Kedesh.

You shall not uncover the nakedness of your brother’s wife; it is your brother’s nakedness.

Then Moses said to Hobab the son of Reuel the Midianite, Moses’ father-in-law, “We are going to the place of which the Lord said, ‘I will give it to you.’ Come with us, and we will be good to you, for the Lord has promised good [things] concerning Israel.”

saying, “Teacher, Moses said, ‘If a man dies, leaving no children, his brother as next of kin shall marry his widow, and raise children for his brother.’

Then Moses went away and returned to Jethro his father-in-law, and said to him, “Please, let me go back so that I may return to my relatives in Egypt, and see if they are still alive.” And Jethro said to Moses, “Go in peace.”

The sons of [Jethro] the Kenite, Moses’ father-in-law, went up from the City of Palms (Jericho) with the sons of Judah, to the wilderness of Judah which is in the Negev (South country) near Arad; and they went and lived with the people.