'Brethren' in the Bible

And there was given to each of them a long white robe, and they were bidden to wait patiently for a short time longer, until the full number of their fellow bondservants should also complete--namely of their brethren who were soon to be killed just as they had been.

Then I heard a loud voice speaking in Heaven. It said, "The salvation and the power and the Kingdom of our God have now come, and the sovereignty of His Christ; for the accuser of our brethren has been hurled down--he who, day after day and night after night, was wont to accuse them in the presence of God.

Then I fell at his feet to worship him. But he exclaimed, "Oh, do not do that. I am a fellow bondservant of yours and a fellow bondservant of your brethren who have borne testimony to Jesus. Worship God." Testimony to Jesus is the spirit which underlies Prophecy.

But he said to me, "Oh, do not do that. I am a fellow bondservant of yours, and a fellow bondservant of your brethren the Prophets and of those who are mindful of the teachings of this book. Worship God."