'Brother' in the Bible

and Ahijah, the son of Ahitub, Ichabod's brother, the son of Phinehas, the son of Eli, the priest of Yahweh in Shiloh, wearing an ephod. The people didn't know that Jonathan was gone.

Eliab his eldest brother heard when he spoke to the men; and Eliab's anger was kindled against David, and he said, "Why have you come down? With whom have you left those few sheep in the wilderness? I know your pride, and the naughtiness of your heart; for you have come down that you might see the battle."

He said, 'Please let me go, for our family has a sacrifice in the city. My brother has commanded me to be there. Now, if I have found favor in your eyes, please let me go away and see my brothers.' Therefore he has not come to the king's table."

Then answered David and said to Ahimelech the Hittite, and to Abishai the son of Zeruiah, brother to Joab, saying, "Who will go down with me to Saul to the camp?" Abishai said, "I will go down with you."