'Brethren' in the Bible

And I will cast you out of my sight, as I have cast out all your brethren, even the whole seed of Ephraim.

For even thy brethren, and the house of thy father, even they have dealt treacherously with thee; yea, they have called a multitude after thee: believe them not, though they speak fair words unto thee.

Know that thus saith the LORD of the king that sitteth upon the throne of David, and of all the people that dwelleth in this city, and of your brethren that are not gone forth with you into captivity;

Then I took Jaazaniah the son of Jeremiah, the son of Habaziniah, and his brethren, and all his sons, and the whole house of the Rechabites;

But ten men were found among them that said unto Ishmael, Slay us not: for we have treasures in the field, of wheat, and of barley, and of oil, and of honey. So he forbare, and slew them not among their brethren.

But I have made Esau bare, I have uncovered his secret places, and he shall not be able to hide himself: his seed is spoiled, and his brethren, and his neighbours, and he is not.