The Refutation of All Heresies is a book written by Hippolytus, a Christian theologian and bishop who lived in the 3rd century AD. Book 9 is one of the ten books that make up this work, and it focuses on the heretical beliefs of the Naassenes, a Gnostic sect that existed during Hippolytus' time. In this book, Hippolytus provides a detailed description of the Naassenes' beliefs and practices, and then proceeds to refute them using biblical and traditional...