'Brothers' in the Bible

And Jesus, walking by the sea of Galilee, saw two brothers, Simon named Peter and Andrew his brother, casting a drag into the sea -- for they were fishers --

And having advanced thence, he saw other two brothers, James of Zebedee, and John his brother, in the boat with Zebedee their father, refitting their nets, and he called them,

and every one who left houses, or brothers, or sisters, or father, or mother, or wife, or children, or fields, for my name's sake, an hundredfold shall receive, and life age-during shall inherit;

And the ten having heard, were much displeased with the two brothers,

'And there were with us seven brothers, and the first having married did die, and not having seed, he left his wife to his brother;