Both churches acknowledged the Pentecost story, but in different ways. The first thought it was a universal experience, meant for every Christian. The other thought it was a unique experience, meant only for the early Church. Yet despite their great differences on this point, they did have one thing in common, and that was their vision of what a faith community is based on. To be one with us, you have to become one like us.
Differences are dangerous.
And actually, that's not so unusual. That has always been the way human beings have looked at community. The human communities are almost always the joining of similarities, rather then the sharing of differences. It's just natural. It's just the way things are.