All Souls 2014 (Transferred): November 3rdChristians have been praying for their departed brothers and sisters since the earliest days of Christianity. Early liturgies and inscriptions on catacomb walls attest to the ancientness of prayers for the dead, even if the Church needed more time to develop a substantial theology behind the practice. Praying for the dead is actually borrowed from Judaism, as indicated in 2 Maccabees 12:41-42. In the New Testament, St Paul prays for mercy for his departed friend Onesiphorus (2 Timothy 1:18). Early Christian writers Tertullian and St. Cyprian testify to the regular practice of praying for the souls of the departed. Tertullian justified the practice based on custom and Tradition, and not on explicit scriptural teaching. This demonstrates that Christians believed that their prayers could somehow have a positive effect on the souls of departed believers.
Closely connected to the ancient practice of praying for the dead is the belief in an explicit state called purgatory. The New Testament hints at a purification of believers after death. For example, Saint Paul speaks of being saved, "but only as through fire" (1 Corinthians 3:15). Over time, many Church Fathers, including St. Augustine, e.g. in Enchiridion of Faith, Hope, and Love and City of God, further developed the concept of a purgation of sins through fire after death.
In the early Church, departed Christians' names were placed on diptychs. In the sixth century, Benedictine communities held commemorations for the departed on the feast of Pentecost. All Souls' Day became a universal festival largely on account of the influence of Odilo of Cluny in AD 998, when he commanded its annual celebration in the Benedictine houses of his congregation. This soon spread to the Carthusian congregations as well. The day was celebrated on various days, including October 15th in 12th century Milan. Today all Western Catholics celebrate All Souls' Day on November 2, as do many Anglicans, Lutherans, and other Christians. Initially many Protestant reformers rejected All Souls' Day because of the theology behind the feast (Purgatory and prayers/masses for the dead), but the feast is now being celebrated in many Protestant communities, in many cases with a sub-Catholic theology of Purgatory. Some Protestants even pray for the dead; many Anglican liturgies include such prayers. While the Eastern Churches lack a clearly defined doctrine of Purgatory, they still regularly pray for the departed. See the Oxford Dictionary of the Christian Church and The Catholic Source Book for more information.
All Souls Day: Prayer for the Departed