Hence, as it was through the Theotokos alone that the Lord came to us, appeared upon earth and lived among men, being invisible to all before this time, so likewise in the endless age to come, without her mediation, every emanation of illuminating divine light, every revelation of the mysteries of the Godhead, every form of spiritual gift, will exceed the capacity of every created being. She alone has received the all-pervading fulness of Him that filleth all things, and through her all may now contain it, for she dispenses it according to the power of each, in proportion and to the degree of the purity of each. Hence she is the treasury and overseer of the riches of the Godhead. For it is an everlasting ordinance in the heavens that the inferior partake of what lies beyond being, by the mediation of the superior, and the Virgin Mother is incomparably superior to all. It is through her that as many as partake of God do partake, and as many as know God understand her to be the enclosure of the Uncontainable One, and as many as hymn God praise her together with Him. She is the cause of what came before her, the champion of what came after her and the agent of things eternal. She is the substance of the prophets, the principle of the apostles, the firm foundation of the martyrs and the premise of the teachers of the Church. She is the glory of those upon earth, the joy of celestial beings, the adornment of all creation. She is the beginning and the source and root of unutterable good things; she is the summit and consummation of everything holy.
St. Gregory Palamas, A Homily on the Dormition of Our Supremely Pure Lady Theotokos and Ever-Virgin Mary.