He showed that ascesis and prayer are the outcome of the whole mystery of Redemption, and are the way for each person to make the grace given at Baptism blossom within himself. He also defended the authenticity of the methods which the Hesychasts used to fix the intellect in the heart; for since the Incarnation we have to seek the grace of the Holy Spirit in our bodies, which are sanctified by the Sacraments and grafted by the Eucharist into the Body of Christ. This uncreated grace is the very glory of God which, as it sprang forth from the body of Christ on the day of the Transfiguration, overwhelmed the disciples (Matthew 17). Shining now in the heart purified from the passions, it truly unites us to God, illumines us, deifies us and gives us a pledge of that same glory which will shine on the bodies of the Saints after the general Resurrection. In thus affirming the full reality of deification, Gregory was far from denying the absolute transcendence and unknowableness of God in His essence. Following the ancient Fathers, but in a more precise manner, he made a distinction between God's imparticipable essence and the eternal, creative and providential energies by which the Lord enables created beings to participate in His being, His life and His light without, however, introducing any division into the unity of the divine Nature. God is not a philosophical concept for Saint Gregory: He is Love, He is Living Person and consuming fire, as Scripture teaches (Deuteronomy 4:24), Who does everything to make us godlike.