Hesychasm (Greek: ἡσυχασμός, hesychasmos, from ἡσυχία, hesychia, "stillness, rest, quiet, silence") is an eremitic tradition of prayer in the Eastern Orthodox Church, and some other Eastern Churches of the Byzantine Rite, practised (Gk: ἡσυχάζω, hesychazo: "to keep stillness") by the Hesychast (Gr. Ἡσυχαστής, hesychastes). Based on Christ's injunction in the Gospel of Matthew to "go into your closet to pray", Hesychasm in tradition has been the process of retiring inward by ceasing to register the senses, in order to achieve an experiential knowledge of God (see theoria).