'Brother' in the Bible

As Jesus was walking by the shore of the Sea of Galilee, He saw Simon [Peter] and Simon’s brother, Andrew, casting a net in the sea; for they were fishermen.

Going on a little farther, He saw James the son of Zebedee, and his brother John, who were also in the boat mending and cleaning the nets.

and James, the son of Zebedee, and John the brother of James (to them He gave the name Boanerges, that is, “Sons of Thunder”);

For whoever does the will of God [by believing in Me, and following Me], he is My brother and sister and mother.”

And He allowed no one to go with Him [as witnesses], except Peter and James and John the brother of James.

Is this not the carpenter, the son of Mary, and the brother of James and Joses and Judas and Simon? Are His sisters not here with us?” And they were [deeply] offended by Him [and their disapproval blinded them to the fact that He was anointed by God as the Messiah].

For Herod himself had sent [guards] and had John arrested and shackled in prison because of Herodias, the wife of his [half-] brother Philip, because he (Herod) had married her.

“Teacher, Moses wrote for us [a law] that if a man’s brother dies and leaves a wife but leaves no child, his brother is to marry the widow and raise up children for his brother.

The second brother married her, and died leaving no children; and the third likewise;

Brother will betray brother to [be put to] death, and a father [will hand over] his child; and children will rise up and take a stand against parents and have them put to death.