"Doctrine of the Atonement" by William Cunningham is a theological exploration of the concept of atonement in Christian doctrine, particularly focusing on the necessity, nature, and extent of the atonement made by Jesus Christ. Cunningham examines different theological perspectives, including Socinian and Arminian views, and emphasizes the connection between the divinity of Christ and the effectiveness of the atonement. The book considers scriptural evidence, addressing objections to the doctrine and exploring its implications for Christian faith and practice. It is a comprehensive work that integrates theological discussion with biblical exegesis to provide a detailed understanding of the atonement in Christian historical theology.