The essence of sin is the fear of the Other, which is part of the rejection of God. Once affirmation of the ‘self’ is realised through the rejection and not the acceptance of the Other — this is what Adam in his freedom chose to do — it is only natural and inevitable for the other to become an enemy and a threat. Reconciliation with God is a necessary precondition for reconciliation with any ‘other.’

— Metropolitan John Zizioulas of Pergamon