Every Christian should join a church because Scripture requires it. Granted, there is no direct command in Scripture that says, “Every Christian must join a local church,” but two factors in Scripture indicate that every Christian should be a member of a local church.
The highest moral laws in the secular west today are toleration and non-judgmentalism. The very ideas of inclusion and exclusion in any context make people think of elitism, xenophobia, or racism.
Still, church membership is an idea with deep biblical roots: