An assessment of Trinitarian thought in the two-hundred-year-old Stone-Campbell Movement, including suggestions for ways in which the renewal of Trinitarian doctrine can revitalize the church's life and mission. Throughout its history the Stone-Campbell Movement has noticeably neglected Trinitarian doctrine, prohibiting a biblical understanding of God as Trinity from significantly impacting the movement's churches. This book attempts to rectify this weakness in three ways. First, a focus on the Trinitarian positions of Thomas Campbell, Alexander Campbell, and Barton W. Stone sheds new light on the early shapers of the movement. Second, the book lays out specific ways in which the movement would benefit by a biblically grounded Trinitarianism and the contributions of contemporary trinitarian theologians. And third, it presents a plan for the advancement of biblical Trinitarian doctrine among Stone-Campbell churches. Significant contributions of this study include the most thorough examination to date of Trinitarian doctrine in Stone-Campbell thought, an original presentation of the historical theology that stands behind the Trinitarian positions of Thomas Campbell, Alexander Campbell, and Barton W. Stone, and a fresh proposal regarding the roots of Barton Stone's quasi-Arianism.