Paul has laid out what this combined community of Jews and Gentiles looks like, how they live together, and their identity in Christ. Now he gets practical. They also aren’t to desert their local community. They are still subject to leaders and rulers. This was probably a good step to make sure that early Christians didn’t think they had to establish a new place and separate themselves from nonbelievers. The Kingdom doesn’t work like that. It springs up among their current communities, working its way among their friends and neighbors, traveling with the spirit to invite new followers.