A Real Christian: The Life of John Wesley fills a void in available books in Wesleyan studies by providing a brief, solid biography that focuses on Wesley himself. While exploring Wesley's ancestry, birth, death, and every major biographical and theological event between, Collins also explores the theme of John Wesley's spiritual growth and maturation.

Wesley came to the conclusion that real Christians are those whose inward (and outward) lives have been transformed by the bountiful sanctifying grace of God -- what he termed real Christianity--and this he strove to obtain for himself. Real Christianity, as Wesley understood it, embraces both works of piety and mercy, the person and the social.