Paul’s statement that God will be all in all and other NT and OT passages are taken by Origen and by Gregory of Nyssa as the scriptural basis of their eschatological doctrine of apokatastasis and eventual universal salvation. At the same time, their doctrine rests (1) on philosophical arguments mainly deriving from Platonism (Gregory’s De anima et resurrectione is deeply influenced by Platonism both in form and in content, and so is Origen, although both are Christians first and Platonists second), and (2) on the allegorical exegesis of Scripture, another heritage of Hellenistic culture: Origen was very well acquainted with the Stoic and Platonic allegorical interpretations of Greek myths.