'Brethren' in the Bible

Abraham begat Isaac, and Isaac begat Jacob, and Jacob begat Judah and his brethren,

and Josiah begat Jeconiah and his brethren, at the Babylonian removal.

and if ye may salute your brethren only, what do ye abundant? do not also the tax-gatherers so?

And while he was yet speaking to the multitudes, lo, his mother and brethren had stood without, seeking to speak to him,

and one said to him, 'Lo, thy mother and thy brethren do stand without, seeking to speak to thee.'

And he answering said to him who spake to him, 'Who is my mother? and who are my brethren?'

And having stretched forth his hand toward his disciples, he said, 'Lo, my mother and my brethren!

is not this the carpenter's son? is not his mother called Mary, and his brethren James, and Joses, and Simon, and Judas?

And ye -- ye may not be called Rabbi, for one is your director -- the Christ, and all ye are brethren;

And the king answering, shall say to them, Verily I say to you, Inasmuch as ye did it to one of these my brethren -- the least -- to me ye did it.

Then saith Jesus to them, 'Fear ye not, go away, tell to my brethren that they may go away to Galilee, and there they shall see me.'