Christ warned us that heresies would come. They were already alive in the First, Second and early Third Centuries. Dr. John Rao discusses here the problems caused both for the Christian community in and of itself as well as for its relationship with the Roman State by Gnostics, Mani, the Montanists and supporters of erroneous Trinitarian beliefs. Taken from the series: "Early Christianity & the Greco-Roman World 27 B.C. - Early 400's A.D. - 2005 VonHildebrand Institute"