I heard of an alcoholic who refused to admit that he had a problem. When those closest to him spoke to him individually of their concern for him he told them he did not have a problem, he was fine. He was in denial. But those closest to him being concerned for his welfare knew they had to do something. They realized they would have to somehow make him understand the reality of his illness and addiction. They decided that they would have to confront him together instead of talking to him individually.
Brotherly love in the biblical sense is an extension of the natural affection associated with near kin, toward the greater community of fellow believers, that goes beyond the mere duty in Leviticus to " love thy neighbour as thyself", and shows itself as "unfeigned love" from a "pure heart", that extends an unconditional hand of friendship that loves when not loved back, that gives without getting, and ever looks for what is best in others. The following is based on the public domain article Brotherly Love found in the Jewish Encyclopedia . Brotherly love is the love for one's fellow-man as a brother.
He that loveth not knoweth not God; for God is love. Here beginning in verse 7 he is talking about brotherly love. Christians are to love one another. The word here is not "eros," but "agape" It is not sentimental, sensual or social love. This is the supernatural love of God.