He was one of the Seventh-day Adventist church's most prominent theologians during the 1930s and 1940s. Andreasen held to the belief that Christians can overcome sin, known popularly as Last Generation Theology, controversial for its views on atonement and salvation. Andreasen became well known for his protests against Seventh-day Adventist church leaders during the last years of his life.[citation needed]
His dispute with the Seventh-day Adventist church was over the theology of the atonement and humanity of Christ that was expressed in a 1957 book Questions on Doctrine (QOD). Andreasen argued that the 'Questions on Doctrine book established a sinister change in Seventh-day Adventist theology. He addressed his concerns in his own book, LETTERS to the Churches. Andreasen urged that 'Questions on Doctrine not be published, and argued extensively with church leaders to correct the ideas they would place into print. Eventually 'Questions on Doctrine was published and Andreasen went public in identifying what he witnessed as problematic aspects of the book.[citation needed]
The church revoked his ministerial credentials in 1961. Shortly before his death in February 1962, it had been rumored that he reconciled with those whom he had so passionately remonstrated. His credentials were posthumously restored in 1962.[1][citation needed]
^Questions on Doctrine (Annotated by George R. Knight), Andrews University Press, 2003
Reactions to the Seventh-day Adventist Evangelical Conferences and Questions on Doctrine 1955-1971, PhD thesis by Julius Nam (chapter 4 describes the interactions between Andreasen and church leaders)