He accepted Christ in the camp because of the Christians he met there. When he was released he wrote a book, Through The Valley of the Kwai, which was the basis of the movie. And he looked for a church to attend. He walked into one church in full uniform and sat down. Someone asked him to move.
Some people come to church for the fellowship.
They just come to crawl around the rim with all the rest of us. But they don't get anything out of it, so they're starving to death like the processional caterpillars. You're no longer wandering exiles. This kingdom of faith is now your home country. You're no longer strangers or outsiders.