Shut-door theology was a belief held by the Millerite group from 1844 to approximately 1854, some of whom later formed into the Seventh-day Adventist Church. It held that as William Miller had given the final call for salvation, all who did not accept his message were lost. The door of salvation was shut, hence the term "shut door". They later understood it was concerning the sanctuary and not the events on earth so abandoned their earlier understanding. As an interpretation of the year "1844", it was connected to the investigative judgment belief, which forms one of the official 28 Fundamentals beliefs today.