For centuries, revivals―and the conversions they inspire―have played a significant role in American evangelicalism. Often unnoticed or unconsidered, however, are the particular theologies underlying these revivals and conversions to faith. With that in mind, church historian Robert Caldwell traces the fascinating story of American revival theologies from the First Great Awakening through the Second Great Awakening, from roughly 1740 to 1840. As he uncovers this aspect of American religious history, Caldwell offers a reconsideration of the theologies of figures such as George Whitefield, Jonathan Edwards, John Wesley, Joseph Bellamy, Samuel Hopkins, and Charles Finney. His scope also includes movements, such as New Divinity theology, Taylorism, Baptist revival theology, Princeton theology, and the Restorationist movement. With this study, we gain fresh insight into what it meant to become a Christian during the age of America's great awakenings.