The Euchologion (Greek: εὐχολόγιον; Slavonic: Молитвословъ, Molitvoslov ; Euhologiu/Molitfelnic) is one of the chief liturgical books of the Orthodox Church and Eastern Catholic Churches, containing the portions of the services which are said by the bishop, priest, or deacon (it corresponds more or less to the Roman Catholic... Found on http://en.wikipedia.org/wiki/Euchologion
(from the article `Sarapion, Saint`) ...Sarapion corresponded with the orthodox theologian Athanasius about the divine Trinity, particularly on the Holy Spirit. Important as evidence of ... Found on http://www.britannica.com/eb/a-z/e/50