Read Isaiah 8:20. Why is it always important to refer back to the biblical “law and testimony” as the norms for our teaching and doctrine? What does this mean for the ministry of prophets who have not become part of the biblical canon?
 When we talk about sola Scriptura (Scripture alone), Seventh-day Adventists are inevitably confronted with the question of what to do with Ellen G. White, who also was inspired by God and served as God’s messenger to His remnant people. What is the relationship of her writings to Scripture?
 Even a cursory reading of Ellen G. White’s writings shows clearly that for her, the Bible was foundational and central in all her thought and theology. In fact, she repeatedly affirmed that the Bible is the highest authority and ultimate norm and standard for all doctrines, faith, and practice (see The Great Controversy, p. 595). Moreover, she clearly supported and upheld the great Protestant principle of sola Scriptura (see The Great Controversy, p. 9).
 In Ellen G. White’s own view, her writings, when compared with Scripture, were a “lesser light to lead men and women to the greater light”, the Bible (Advent Review and Sabbath Herald, January 20, 1903). Her writings are never a shortcut to or replacement for any serious Bible study. In fact, she comments: “You are not familiar with the Scriptures. If you had made God’s word your study, with a desire to reach the Bible standard and attain to Christian perfection, you would not have needed the Testimonies. It is because you have neglected to acquaint yourself with God’s inspired Book that He has sought to reach you by simple, direct testimonies”. — Ellen G. White, Testimonies for the Church, vol. 2, p. 605.
 As such, her writings are to be appreciated. They share the same kind of inspiration as the biblical writers had, but they have a different function than does the Bible. Her writings are not an addition to Scripture but are subject to Holy Scripture. She never intended her writings to take the place of Scripture; instead, she elevated the Bible as the only standard for faith and practice.