'Brother' in the Bible

Andrew, the brother of Simon Peter, was one of the two who heard this from John and followed him.

He first finds his own brother Simon, and says to him, We have found the Messias (which being interpreted is Christ).

One of his disciples, Andrew, Simon Peter's brother, says to him,

It was the Mary who anointed the Lord with ointment and wiped his feet with her hair, whose brother Lazarus was sick.

and many of the Jews came to Martha and Mary, that they might console them concerning their brother.

Martha therefore said to Jesus, Lord, if thou hadst been here, my brother had not died;

Jesus says to her, Thy brother shall rise again.

Mary therefore, when she came where Jesus was, seeing him, fell at his feet, saying to him, Lord, if thou hadst been here, my brother had not died.