'Brother' in the Bible

Then the anger of Jehovah was kindled against Moses, and he said, Is not Aaron the Levite thy brother? I know that he can speak well. And also behold, he goeth out to meet thee; and when he seeth thee he will be glad in his heart.

And Jehovah said to Moses, See, I have made thee God to Pharaoh; and Aaron thy brother shall be thy prophet.

Thou shalt speak all that I command thee; and Aaron thy brother shall speak unto Pharaoh, that he let the children of Israel go out of his land.

And thou shalt take thee Aaron thy brother, and his sons with him, from among the children of Israel, that he may serve me as priest Aaron, Nadab and Abihu, Eleazar and Ithamar, Aaron's sons.

And thou shalt make holy garments for Aaron thy brother, for glory and for ornament.

And these are the garments which they shall make: a breastplate, and an ephod, and a cloak, and a checkered vest, a turban, and a girdle; and they shall make holy garments for Aaron thy brother, and his sons, that he may serve me as priest.

And thou shalt clothe with them Aaron thy brother, and his sons with him; and shalt anoint them, and consecrate them, and hallow them, that they may serve me as priests.

And he said to them, Thus saith Jehovah, the God of Israel: Put every man his sword upon his hip; go and return from gate to gate through the camp, and slay every man his brother, and every man his friend, and every man his neighbour.

And Moses said, Consecrate yourselves to-day to Jehovah, yea, every man with his son, and with his brother, and bring on yourselves a blessing to-day.