or Invention of the True Cross to commemorate the finding. ("Invention" is a rendering of the Latin term inventio meaning "discovery".) Pope John XXIII removed this feast in 1960, so that the General Roman Calendar now celebrates both the finding and the exaltation of the Holy Cross on 14 September, although some Latin American countries and Mexico still celebrate the feast of the finding on 3 May. Some communities which celebrate the liturgy in the extraordinary form of the Roman Rite also observe the feast of the finding of the Holy Cross on 3 May. Theological Distinction The Second Council of Nicæa of 787, drew the distinction between veneration of the cross and worship or latria, "which, according to the teaching of the faith, belongs to the Divine nature alone." Petavius noted that this cult must be considered as not belonging to the substance of religion, but as being one of the things not absolutely necessary to salvation. Thus, the honor paid to the image passes to the prototype; and he who adores the image, adores the person whom it represents. Traditions According to Christian tradition, the True Cross was discovered in 326 by Saint Helena, the mother of the Roman Emperor Constantine the Great, during a immigration she made to Jerusalem. The Church of the Holy Sepulchre was then built at the site of the discovery, by order of Helena and Constantine. The church was dedicated nine years later, with a portion of the cross. One-third remained in Jerusalem, one-third was brought to Rome and deposited in the Sessorian basilica Santa Croce in Gerusalemme (Holy Cross in Jerusalem), and one-third was taken to Constantinople to make the city impregnable. The date of the feast marks the dedication of the Church of the Holy Sepulchre in 335. This was a two-day festival: although the actual consecration of the church was on 13 September, the cross itself was brought outside the church on 14 September so that the clergy and faithful could pray before the True Cross, and all could come forward to venerate it. Historically in Western Christianity, the Wednesday, Friday, and Saturday of the calendar week after the one in which the feast day occurs are designated as one of each year's four sets of Ember days. Until 1969, these ember days were a part of the liturgical calendar of the Roman Catholic Church. Organization of these celebrations in