'Brother' in the Bible

A friend loves at all times; and a brother is born for adversity.

One who is slack in his work is brother to him who is a master of destruction.

A brother offended is more difficult than a fortified city; and disputes are like the bars of a castle.

A man of many companions may be ruined, but there is a friend who sticks closer than a brother.

Don't forsake your friend and your father's friend. Don't go to your brother's house in the day of your disaster: better is a neighbor who is near than a distant brother.