Church Conflict

I met yesterday afternoon with a Church consultant. I said, “What is the cause of Church conflict?” He said, “Where are you coming from?” I said, “From the point of view of theory -- theology -- underlying causes.” He said, “It’s ownership. People passionately own their beliefs. They say, ‘It’s my Church, and God is invited,’ rather than, ‘It’s God’s Church, and I’m invited.’” QUESTION: How would one overcome this attitude of “ownership”? Does a leader need to overcome it, too?