'Brethren' in the Bible

and there was given to each one white robes, and it was said to them that they may rest themselves yet a little time, till may be fulfilled also their fellow-servants and their brethren, who are about to be killed -- even as they.

And I heard a great voice saying in the heaven, 'Now did come the salvation, and the power, and the reign, of our God, and the authority of His Christ, because cast down was the accuser of our brethren, who is accusing them before our God day and night;

and I fell before his feet, to bow before him, and he saith to me, 'See -- not! fellow servant of thee am I, and of thy brethren, those having the testimony of Jesus; bow before God, for the testimony of Jesus is the spirit of the prophecy.'

and he saith to me, 'See -- not; for fellow-servant of thee am I, and of thy brethren the prophets, and of those keeping the words of this scroll; before God bow.'