This hidden power of culture to ban and exclude proves most pervasive. Cultural exclusion is devious, often wrapping itself in the language of flag and family and Bible. Indeed, the power of culture often exerts more influence on Baptist theology than does the Bible. Southern Baptists largely gave up racism not because it was wrong, but because it was illegal and unpopular. But each of these bans is temporary and subject to change.
Political fortunes are transitory and cyclical.
Ruthless leaders can be outvoted. Poor theology can be corrected. Willing learners can be taught. Cultures yield from the outside and give way to change. Passing time and persistent people may indeed tear down these barriers.