In the series that begins with this article, we will be examining surprising results from the latest historical research into Gnostic Christianity. Many readers will recognize the label Gnostic Christianity as the designation of a heretical Christian movement mentioned prominently in the New Testament, especially the epistle of John. Gnostic Christians were the first to teach many heresies that persist to this day, including eternal security (once saved always saved), predestination, and many more.