Be kindly affectionate to one another with brotherly love, in honor giving preference to one another; (Romans 12:10, NKJV)
The regard and treatment of Christians toward one another is discussed here under the figure of a family. Brotherly love is to be marked by warm, familial affection. That is, we are to hold each other close like members of our family. Instead of clannishly separating from other Christians, we are to express warm affection for each other that grows out of family togetherness and familiarity. So, instead of jealously seeking honor for oneself above others, consider the needs and circumstances of other Christians first. We are a spiritual family, and that is what family does.