The Eastern Church never subscribed to Augustine of Hippo's notions of original sin and hereditary guilt. The Church does not interpret "original sin" as having anything to do with transmitted guilt but with transmitted mortality. Because Adam sinned, all humanity shares not in his guilt but in the same punishment.[72]
The Eastern Churches accept the teachings of John Cassian, as do Catholic Churches eastern and western,[40] in rejecting the doctrine of total depravity, by teaching that human nature is "fallen", that is, depraved, but not totally. Augustine Casiday states that Cassian "baldly asserts that God's grace, not human free will, is responsible for 'everything which pertains to salvation' – even faith".[41] Cassian points out that people still have moral freedom and one has the option to choose to follow God.
Original sin - Wikipedia