Mystical theology is the branch of theology that explains mystical practices and states, as induced by contemplative practices such as contemplative prayer.
According to Origen (184/185–253/254AD) and the Alexandrian theology, theoria is the knowledge of God in creation and of sensible things, and thus their contemplation intellectually (150–400AD) (see Clement of Alexandria, and Evagrius Ponticus). This knowledge and contemplation leads to communion with God akin to Divine Providence.
In the theological tradition of St. Macarius of Egypt (ca. 300–391AD), theoria is the point of interaction between God and the human in the heart of the person, manifesting spiritual gifts to the human heart.
The highest form of contemplation originates in the heart (see agape), a higher form of contemplation than that of the intellect. The concept that theoria is allotted to each unique individual by their capacity to comprehend God is consistent. This is also the tradition of theoria, as taught by St. Symeon the New Theologian (949–1022AD), that one cannot be a theologian unless one sees the hypostases of God or the uncreated light. This experience cultivates humility, meekness and the love of the human race that the Triune God has created. This invisible fire in the heart for humanity is manifest in absolute kindness and love for one's neighbor akin to selfless humility, agape or love, growing from mortification, kenosis, or epiclesis. This agape, or holy fire, is the essence of Orthodoxy.