The Simonians were a Gnostic sect of the 2nd century which regarded Simon Magus as its founder and traced its doctrines, known as Simonianism, back to him. The sect flourished in Syria, in various dis

Against Heresies is a work of Christian theology written in Greek by Irenaeus, the bishop of Lugdunum. Due to its reference to Eleutherus as the current bishop of Rome, the work is usually dated c. 18