Refutations is the magnum opus of the Armenian bishop, Eznik of Kolb. In his work he lays out his argument regarding the nature and the presence of evil in the world, in contrast to the moral postulate of the Latin clergyman St. Augustine of Hippo. Eznik also refuses the Persian state religion, with a special emphasis on the issue of Zurvanism. This carries over as well on the argument levied against all dualistic thought, and against the Marcionist heresy in particular.