The pioneers of the church have traditionally taught that the seventh-day sabbath will be a test, leading to the sealing of God's people during the end times, though there is little consensus about how this will play out. The church has clearly taught that there will be an international Sunday law enforced by a coalition of religious and secular authorities, and that all who do not observe it will be persecuted, imprisoned or martyred. This is taken from the church's interpretation, following Ellen G. White, of , , , , and . Where the subject of persecution appeared in prophecy, it was thought to be about the sabbath. Some early Adventists were jailed for working on Sunday, in violation of various local blue laws that legislated Sunday as a day of rest.