to be away from his diocese unless for a grave and urgent reason. In many countries, the day is a holy day of obligation to participate in the celebration of Mass and takes place on the Thursday after Trinity Sunday. On that day or on the following Sunday, which is the feast day where it is not a holy day of obligation, it is traditional to hold in the streets of a town or in an individual parish a procession with prayers and singing to honor the Blessed Sacrament. German processional hymns include the 1687 "Kommt her, ihr Kreaturen all". During the procession, the consecrated host is displayed in a monstrance held aloft by a member of the clergy. At the end of the procession, Benediction of the Blessed Sacrament is imparted. Anglicanism The celebration of Corpus Christi was abolished in England in 1548. However, in the Church of England "the Thursday after Trinity Sunday may be observed as The Day of Thanksgiving for the Institution of Holy Communion (Corpus Christi)" as one of the church's Festivals and with a special liturgy. The feast is also celebrated by Anglo-Catholic parishes, even in provinces of the Anglican Communion that do not officially include it in their calendars. McCausland's Order of Divine Service, the most commonly used ordo in the Anglican Church of Canada, provides lections for the day. Other churches Corpus Christi is also celebrated by the Old Catholic Church, the Liberal Catholic Church and by some Western Rite Orthodox Christians. It is commemorated in the liturgical calendars of the more Latinized Eastern Catholic Churches. Lutheranism Martin Luther spoke out against processing with the consecrated elements, which he viewed as "only play-acting" and "just vain idolatry". In one of his postils (homilies), he wrote However, the feast was retained in the calendars of the Lutheran Church until about 1600. Calvinism Like Lutherans, followers of the Reformed tradition do not observe the feast. Folk traditions On the eve of the Feast of Corpus Christi, clergy bless Corpus Christi wreaths that are made of flowers. Corpus Christi wreaths and bouquets are often "attached to flags and banners, to houses, and to the arches of green boughs that span the streets." In Christian homes, these Corpus Christi wreaths are suspended on walls or displayed on doors and in windows. Corpus Christi wreaths are also "put up in gardens, fields, and pastures, with a prayer