1 Corinthians 1:10-18.  How do people dedicated to being One (as God is One) end up being "of" Paul, Apollos, and Cephas?  As we interact and baptize a culture, we are going to disagree about the utility of various symbols, ideas, etc in the local culture.  Disagreements are useful for discernment.  It's when we dogmatize and moralize our differences that they become divisions.  So don't do they (unless our differences really are based on theological or moral necessity; something we rarely judge well).  Enjoy the show!