The Adventist family of churches are regarded today as conservative Protestants.

While they hold much in common, their theology differs on whether the intermediate state is unconscious sleep or consciousness, whether the ultimate punishment of the wicked is annihilation or eternal torment, the nature of immortality, whether or not the wicked are resurrected, and whether the sanctuary of refers to the one in heaven or on earth. The movement has encouraged the examination of the Old Testament, leading some to observe the Sabbath and others to use the name "Jehovah" for God.