There are parts of you that strive and fall short; there are parts of you that feel broken. Those are the parts that let in the light. Don't run from your imperfections.
Bell doesn't have to call himself a liberal or anything else, short of lover of Jesus. But it might be wise to reach out in a new way to people who have been his partners even before he preached his first sermon.
When God speaks, often it is outside of the noble confines of the stained-glass edifice. This is what Mark is attempting to tell us: God's movement is often abrupt and unsettling.