'Brother's' in the Bible

Yahweh said to Cain, "Where is Abel, your brother?" He said, "I don't know. Am I my brother's keeper?"

Yahweh said, "What have you done? The voice of your brother's blood cries to me from the ground.

Now you are cursed because of the ground, which has opened its mouth to receive your brother's blood from your hand.

His brother's name was Jubal, who was the father of all who handle the harp and pipe.

To Eber were born two sons. The name of the one was Peleg, for in his days the earth was divided. His brother's name was Joktan.

Abram took Sarai his wife, Lot his brother's son, all their substance that they had gathered, and the souls whom they had gotten in Haran, and they went forth to go into the land of Canaan. Into the land of Canaan they came.

They took Lot, Abram's brother's son, who lived in Sodom, and his goods, and departed.

I bowed my head, and worshiped Yahweh, and blessed Yahweh, the God of my master Abraham, who had led me in the right way to take my master's brother's daughter for his son.

Stay with him a few days, until your brother's fury turns away;

until your brother's anger turn away from you, and he forgets what you have done to him. Then I will send, and get you from there. Why should I be bereaved of you both in one day?"

Judah said to Onan, "Go in to your brother's wife, and perform the duty of a husband's brother to her, and raise up seed to your brother."

Onan knew that the seed wouldn't be his; and it happened, when he went in to his brother's wife, that he spilled it on the ground, lest he should give seed to his brother.