'Brethren' in the Bible

And there was given to them, to each one a white robe; and it was said to them that they should rest yet a little while, until both their fellow-bondmen and their brethren, who were about to be killed as they, should be fulfilled.

And I heard a great voice in the heaven saying, Now is come the salvation and the power and the kingdom of our God, and the authority of his Christ; for the accuser of our brethren has been cast out, who accused them before our God day and night:

And I fell before his feet to do him homage. And he says to me, See thou do it not. I am thy fellow-bondman, and the fellow-bondman of thy brethren who have the testimony of Jesus. Do homage to God. For the spirit of prophecy is the testimony of Jesus.

And he says to me, See thou do it not. I am thy fellow-bondman, and the fellow-bondman of thy brethren the prophets, and of those who keep the words of this book. Do homage to God.