'Brotherly' in the Bible

But concerning brotherly love, you have no need that one write to you. For you yourselves are taught by God to love one another,

Let brotherly love continue.

Seeing you have purified your souls in your obedience to the truth through the Spirit in sincere brotherly affection, love one another from the heart fervently:

and in godliness brotherly affection; and in brotherly affection, love.