'Brother' in the Bible

As he went along the Sea of Galilee, he saw Simon and Andrew, Simon's brother, casting a net into the sea (for they were fishermen).

Going on a little farther, he saw James, the son of Zebedee, and John his brother in their boat mending nets.

to James and his brother John, the sons of Zebedee, he gave the name Boanerges (that is, "sons of thunder");

For whoever does the will of God is my brother and sister and mother."

He did not let anyone follow him except Peter, James, and John, the brother of James.

Isn't this the carpenter, the son of Mary and brother of James, Joses, Judas, and Simon? And aren't his sisters here with us?" And so they took offense at him.

For Herod himself had sent men, arrested John, and bound him in prison on account of Herodias, his brother Philip's wife, because Herod had married her.

"Teacher, Moses wrote for us: 'If a man's brother dies and leaves a wife but no children, that man must marry the widow and father children for his brother.'

Brother will hand over brother to death, and a father his child. Children will rise against parents and have them put to death.