Force is a strong world.
I'm not so much saying we encourage it or discourage it as that most missions agencies have recognized that their assumptions and methods in church planting will determine whether a congregation starts out as a mixed or honogeneous on. Using geographiy, instead of social factors, as a guide to church planting create mixed congregations. And especially in a non-Christian culture, new believers already have so much to deal with that the added stress of coping with culture conflict is not needed. Usually there are values problems that are not necessarily moral. For example, the Bible tells us to be modest, but it doesn't tell us in much detail what modest is .