Craig Dressler teaches English in Tokyo as a "tentmaker" while also sharing his Christian faith covertly with his coworkers and students. He is able to financially support missionary work through the wages from his teaching job. Additionally, he shares his faith and distributes Christian materials through his local church's Japanese and English services, by sending materials to universities in China and the Middle East, and by evangelizing Iranians in Japan. He believes Christians can exponentially spread the gospel through having dual purposes in life that serve as "wheels within wheels".