In this first class in a new series on Biblical doctrine we take a look at the Bible as the only inspired, infallible, and inerrant truth for humanity—the 66 books of the Old and New Testaments. It alone is sufficient and authoritative for salvation, faith, and obedience. While creation reveals God's existence, only Scripture provides the saving knowledge God committed to writing for preservation and clarity. Its authority rests on God as its Author, evidenced by its heavenly content, powerful teaching, harmony, God-centered focus, and—decisively—the Holy Spirit's internal witness in believers. Salvation's essentials are clearly taught for all to grasp through ordinary means, it should be translated into every language, clearer passages interpret less clear ones, and it remains the final standard over all councils, opinions, and traditions.