'Brother's' in the Bible

Later, the LORD asked Cain, "Where's your brother Abel?" "I don't know," he answered. "Am I my brother's guardian?"

"What did you do?" God asked. "Your brother's blood cries out to me from the ground.

Now you're more cursed than the ground, which has opened to receive your brother's blood from your hand.

and stay there with him a few days until your brother's fury subsides.

So Judah instructed Onan, "You are to have sexual relations with your dead brother's wife, performing the duty of a brother-in-law with her, and have offspring for your brother."

But Onan knew that the offspring wouldn't be his own heir, so whenever he had sexual relations with his brother's wife, he would spill his semen on the ground to avoid fathering offspring for his brother.

The palace manager searched for the cup, beginning with the oldest brother's sack and ending with the youngest brother's sack, and there it was! in Benjamin's sack.