The major weekly worship service occurs on Saturday, typically commencing with Sabbath School which is a structured time of small-group bible study at church. Adventists make use of an officially produced "Sabbath School Lesson", which deals with a particular biblical text or doctrine every quarter.[41] Special meetings are provided for children and youth in different age groups during this time (analogous to Sunday school in other churches).
^ Adventist historian George R. Knight notes several other leading evangelicals who considered Adventist doctrine to be heterodox; these included Donald Barnhouse (prior to 1950), Norman F. Douty, Herbert S. Bird, E. B. Jones, Louis B. Talbot and M. R. DeHaan. See "Questions on Doctrine, annotated edition". Andrews University Press. 2003: xiii–xxxiii Sabbath-keeping
