In Ephesians 4.4-6, Paul describes the several factors that hold a group of believers together; they are all one:

• One body
• One Spirit
• One hope that belongs to your call
• One Lord
• One faith
• One baptism
• One God and Father of all, who is over all and through all and in all.

If all are one, why do churches split?  Why are there so many denominations?  Often there is disagreement over the details of the One Faith.  The ESV says “One faith refers to the doctrinal truths Christians commonly confess.” So the Apostles’ Creed is a starting point that would bring many together. Beyond those central truths, issues such as baptism, women’s roles, church discipline, the authority of scripture, and the proper administration of the Lord’s Supper cause divisions.

It is good to know what you believe.  It is good to listen to others to understand what they believe.  It is okay to disagree.  It is good to apply what Paul says earlier in Ephesians 4 – “walk with all humility and gentleness, with patience, bearing with one another in love, eager to maintain the unity of the Spirit in the bond of peace.”