'Brother' in the Bible

And he went out the day after and saw two of the Hebrews fighting: and he said to him who was in the wrong, Why are you fighting your brother?

And the Lord was angry with Moses, and said, Is there not Aaron, your brother, the Levite? To my knowledge he is good at talking. And now he is coming out to you: and when he sees you he will be glad in his heart.

And the Lord said to Moses, See I have made you a god to Pharaoh, and Aaron your brother will be your prophet.

Say whatever I give you orders to say: and Aaron your brother will give word to Pharaoh to let the children of Israel go out of his land.

Now let Aaron your brother, and his sons with him, come near from among the children of Israel, so that they may be my priests, even Aaron, and Nadab, Abihu, Eleazar, and Ithamar, his sons.

And make holy robes for Aaron your brother, so that he may be clothed with glory and honour.

This is what they are to make: a priest's bag, an ephod, and a robe, and a coat of coloured needlework, a head-dress, and a linen band; they are to make holy robes for Aaron your brother and for his sons, so that they may do the work of priests for me.

These you are to put on Aaron, your brother, and on his sons, putting oil on them, separating them and making them holy, to do the work of priests to me.

And he said to them, This is the word of the Lord, the God of Israel: Let every man take his sword at his side, and go from one end of the tents to the other, putting to death his brother and his friend and his neighbour.

And Moses said, You have made yourselves priests to the Lord this day; for every one of you has made the offering of his son and his brother; the blessing of the Lord is on you this day.