Ascension of Jesus to facilitate the obligation to attend Mass. Saint Jerome held that it was of Apostolic origin, but in fact the ascension was originally part of Pentecost (the coming of the Holy Spirit), and developed as a separate celebration only slowly from the late 4th century onward. In the Catholic tradition it begins with a three-day "rogation" to ask for God's mercy, and the feast itself includes a procession of torches and banners symbolising Christ's journey to the Mount of Olives and entry into heaven, the extinguishing of the Paschal candle, and an all-night vigil; white is the liturgical colour. The
Ascension of Jesus of God the Father almighty." (Apostles' Creed) It implies the human Jesus being taken into Heaven and marks the beginning of Christ's heavenly rule, and its hold on the Christian imagination is evidenced by its importance in Christian art through the centuries. The Feast of the Ascension is one of the ecumenical (i.e., universally celebrated) feasts of the Christian liturgical year, along with the Passion, Easter, Pentecost, and Christmas. Ascension Day is traditionally celebrated on the sixth Thursday after Easter Sunday, the fortieth day from Easter day, although some Roman Catholic provinces have moved the observance to the following Sunday