Roberts Liardon received his call to ministry as an eight-year-old boy. Since then, he has diligently endeavored to follow that call through preaching and teaching God's Word. He has preached in over eighty nations with extensive ministry in Europe, Asia, and Africa. As a best-selling author, Roberts has expanded his ministry to the printed page. His over four dozen books have been translated into over fifty languages and circulated throughout the world. Roberts's writings reflect his belief that the church can fulfill its call and bring revival to the nations by combining God's Word with the moving of His Spirit. As a church historian, Roberts possesses a wealth of knowledge regarding the great leaders of three Christian movements-Pentecostal, divine healing, and charismatic. He embarked on his in-depth studies as a fourteen-year-old boy and has continued those studies throughout adulthood. Roberts has established ongoing research of our Christian heritage by founding the Reformers and Revivalists Historical Museum. He has documented his research in God's Generals: Why They Succeeded and Why Some Failed, God's Generals: The Roaring Reformers, God's Generals: The Revivalists, and God's Generals: The Healing Evangelists. Through the museum and his God's Generals book and video series, Roberts preserves the treasure of our Christian heritage. Roberts Liardon Ministries is now based in Sarasota, Florida.