Constantinople and the West. 129 Devotions are "external practices of piety" which are not part of the official liturgy of the Catholic Church but are part of the popular spiritual practices of Catholics. " Knowledge is our most important resource ". On Being w/Krista Tippett ; Jimmy Wales - The Sum of All Human Knowledge (broadcast wamu American University) September 11, 2016. John Meyendorff, Catholicity and the Church, St Vladimirs Seminary Press, 1997, isbn,. 166 In Western Christianity, particularly Catholicism, the sacrament is called confirmation, because it confirms and strengthens the grace of baptism; in the Eastern Churches, it is called chrismation, because the essential rite is the anointing of the person with chrism, 167 a mixture of olive. It requires refraining from lust, masturbation, fornication, pornography, prostitution and, especially, rape. But after becoming a Catholic priest, a man may not marry (see Clerical celibacy ) unless he is formally laicised. 346 Following the 1917 October Revolution, persecution of the church and Catholics in the Soviet Union continued into the 1930s, with the execution and exiling of clerics, monks and laymen, the confiscation of religious implements, and closure of churches. The Reformation of the 16th century resulted in Protestants breaking away.