Churches (and other groups) sometimes feel the need to speak about unity when they are facing the threat of factional elements.
Yet true unity is not about the avoidance of factions. It is about the way we regard and prefer one another.
Unity does not put a limit on diversity. It is a commitment to one another and to the common good that has space for each person to offer their unique contribution in the most helpful manner.
Most of all, it is the lived commitment to follow Jesus, who never failed to act in love for others.