Greetings from Korea, As a well-known fact, Korea has one of the most developed and advanced public transportation systems in major cities (you can disagree with it if you want ). In fact, it is a lot faster to take buses and subways rather than driving your own car in Seoul, capital. With this as a backdrop, there are not many confessionally reformed/presbyterian churches in South Korea, so some Christians are forced to travel quite a distance to attend such churches. 19+ is driving age in Korea, and having your own car is financially challenging, especially for college students. Many of these Christians (especially young and reformed), therefore, have to use public transportation on Lord's Day, because otherwise, they have to walk to churches, which is nearly impossible (for example, the church that I am currently attending in South Korea is about 3-4 hours by foot away from my apartment). Is it lawful to use public transportation on Lord's Day then? Can it be categorized as a work of necessity or as a work of piety? Do churches have to provide carpools for those Christians who have to travel long distance? Or will these Christians just have to settle with non-reformed churches ignoring their conscience?