This chapter discusses the commitment to biblical authority in American Protestantism, including the ongoing debate over how to read and interpret the Bible; and the doctrines most common to American Protestant churches and denominations, including doctrines about God, creation, human nature and sin, the atoning work of Christ on the cross, the work of the Holy Spirit, salvation, the church and sacraments, and the future of the world. In each case, the Bible is often the source of disagreement and debate.