feast it is blessed in the narthex of the church (the place where baptisms take place), and then the next morning, on the day of the feast, after Divine Liturgy, an outside body of water is blessed, demonstrating the sanctification of all creation which in Eastern Orthodox theology was accomplished by Christ's incarnation, death and resurrection. Later, the priest visits the homes of all of the faithful, and blesses their homes with this Theophany water. Daily services Historical development Because the Rite of Constantinople evolved as a synthesis of two distinct rites — cathedral rite of Constantinople called the "asthmatiki akolouthia" ("sung services") and the monastic typicon of the Holy Lavra of Saint Sabbas the Sanctified near Jerusalem — its offices are highly developed and quite complex. Local variations Two main strata exist in the rite, those places that have inherited the traditions of the Russian Church which had been given only the monastic Sabbaite typicon which she uses to this day in parishes and cathedrals as well as in monasteries, and everywhere else where some remnant of the cathedral rite remained in use; therefore, the rite as practiced in monasteries everywhere resembles the Russian recension, while non-Russian non-monastic customs differs significantly. For example, in the Russian tradition, the "all-night vigil" is served in every church on Saturday nights and the eves of feast days (although it may be abridged to be as short as two hours) while elsewhere, it is usual to have matins on the morning of the feast; however, in the latter instance, vespers and matins are rather less abridged but the Divine Liturgy commences at the end of matins and the hours are not read, as was the case in the extinct cathedral rite of Constantinople. Also, as the rite evolved in sundry places, different customs arose; an essay on some of these has been written by Archbishop Basil Krivoshein and is posted on the web. Liturgical books The Horologion (; Church Slavonic: Chasoslov, Часocлoвъ), or Book of Hours, provides the fixed portions of the Daily Cycle of services (, ) as used by the Eastern Orthodox and Eastern Catholic churches. Into this fixed framework, numerous moveable parts of the service are inserted. These are taken from a variety of liturgical books: Psalter (Greek: Ψαλτήρ(ιον), ; Slavonic: Ѱалтырь or Ѱалтирь, Psaltyr' ) A book containing the 150 Psalms divided into 20 sections called Kathismata together with