The Feast of the Assumption celebrates the happy departure of Mary from this life and the assumption of her body into heaven. It is the principal feast of the Blessed Virgin. History Although probably not unknown in the early Church, the earliest references to the Assumption of the Virgin Mary appear in the 4th (or possibly late 3rd) century in Liber Requiei Mariae (The Book of Mary's Repose), and in the writings of a Bishop Meliton. St. John of Damascus (d. AD 755) relates a tradition where, during the Council of Chalcedon (AD 451), the emperor Marcian and his wife wished to find the body of Mary. He tells how all the apostles had seen her death, but her tomb was empty upon inspection. Festivals commemorating the death of the Blessed Virgin Mary were common from the 5th century onwards, although the exact dates were never universally fixed. In AD 556 the patriarch of Alexandria, Theodosius, attests to two popular Marian feasts in Egypt: Mary's death (January 16) and Assumption (August 9). Theodosius understood Mary to have died before being assumed, and according to the feast dates in Egypt at the time, she was assumed 206 days after her death. In AD 600, the emperor Mauricius decreed that the Assumption was to be celebrated on August 15. Soon, the Church in Ireland adopted this date, and it was later introduced in Rome. As the cult of Mary grew in the West, there was more pressure for the Catholic Church to define the exact nature of the Assumption. Pope Pius did this in 1950. The Orthodox Church teaches that the Virgin Mary died a fully human death before being assumed, and celebrates the feast accordingly. According to various traditions known in the East, St. Thomas was not around when Mary passed away, just as he was absent when Jesus was raised from the dead.
Protestants have overwhelmingly rejected the Assumption of Mary theologically and devotionally, probably because it is not explicitly spelled out in the bible. Many Reformation denominations (like Anglicanism and Lutheranism) have set aside August 15th as a day to commemorate the Blessed Virgin Mary, although without the explicit context of the Assumption. However, the Assumption of Mary is an ancient belief certainly fitting the honor of the one chosen to bear the Son of God. This dogma is solidly within the biblical tradition of holy and unique individuals being taken bodily to heaven (like Elijah and Enoch). She who is "Mother of the Lord," "full of grace," and whom "all generations shall call blessed" is certainly worthy of this honor. Church Father John of Damascus describes the importance of celebrating the Assumption quite well:
Let us then also keep the solemn [Assumption] feast today to honour the joyful departure of God's Mother...Thus, recognizing God's Mother in this Virgin, we celebrate her falling asleep, not proclaiming her as God - far be from us these heathen fables - since we are announcing her death, but recognizing her as the Mother of the Incarnate God...
Mary assumed into Heaven: Pray for us