I spent a lot of time developing in books why worshipping separately actually impacts inequality, economic, social, on and on. So I really do believe there are huge advantages to being together even though it's difficult, even though we have a lot to learn.

Now they had to sit in separate places and sometimes they'd even have to sit outside and look through the windows. But they did worship together.

One of the things we find when we talk to people that attend these congregations, they all have social cost to it. People want to know why they're doing that. Sometimes they're questions about selling out on their race or "Are we not good enough that you have to go to this kind of congregation and not ours?" So there are costs to it, and I think they're a little bit higher in the South because of its history.

But in the US, when you have two separate cultures, each with its right, each of which has come to exist in this political entity in the last couple hundred years, each feeling like, "I have the right to hold onto my culture," and that's what makes it difficult.

There's always that sense of because we're so racially defined, if you're trying to cross the boundaries you don't fit into any particular space.

Scripture is vast, and people can pick and choose what they emphasize, and so for hundreds of years verses that said that you are to welcome the stranger, that with Christ there's neither Jew nor Greek, male nor female, we've broken down the dividing wall with the original church, where Christians were first called Christian was the church of Antioch in which for the first time you had Jews, Gentiles of all different ethnicities come together as one people. That's when they were called Christians.

Then of course there are bigger things that matter, like who do I see up there in the congregation? Do I see myself up there? Well, I don't.