Going back to the thirteenth century, the feast of Corpus Christi was instituted by the Bishop of Liege, Belgium, for his diocese at the urgent request of St. Juliana, prioress of a convent on Mount Cornillon, near the gates of the city. A few years later Urban IV, a former arch-deacon of Liege, extended its observance to the whole Church. This feast, by reason of the procession of the Blessed Sacrament, became very popular with the faithful, who are thereby enabled to proclaim not only their faith in the Real Presence but also their gratitude to God for all the benefits which they derive from this great Sacrament. The Sacrament of the Eucharist is so closely connected with the life of the Church and of the faithful, that it is from it alone that this life draws its sustenance and in it finds continual expression.