All Saints and All Souls FR. WILLIAM SAUNDERS What is the origin of All Saints and All Souls Day. Are they linked with paganism and Halloween? Both the Feast of All Saints and the Feast of All Souls evolved in the life of the Church independently of paganism and Halloween. However, elements of pagan practices were perhaps “baptized” by some cultures or attached themselves to the celebration of All Saints and All Souls. Let us first address the Feast of All Saints. The exact origins of this celebration are uncertain, although, after the legalization of Christianity in 313, a...