The Fathers and Tradition

The doctrine of Purgatory was not invented in the Middle Ages. From the earliest days of the Church, Christians prayed for the dead — in the liturgy, at the tombs of the martyrs, and in their private devotions. The Fathers of the Church bear witness to this ancient and universal practice, and many of them explicitly teach the existence of a purification after death.

Tertullian (c. 160–220)

Among the earliest Latin writers to attest to prayer for the dead, Tertullian describes the offering of prayers and the Holy Sacrifice on the anniversary of a spouse's death as an established custom. In De Monogamia (c. 213), he speaks of a widow who prays for the soul of her deceased husband and offers the Sacrifice on the anniversary of his falling asleep. In De Corona, he lists "oblations for the dead" among the Traditions received from the Apostles.

St. Cyril of Jerusalem (c. 313–386)

In his Catechetical Lectures (Lecture XXIII, Mystagogic V), St. Cyril teaches that the souls of the departed receive "the greatest help" when prayers and the Holy Sacrifice are offered for them during the liturgy: "We offer Christ, sacrificed for our sins, propitiating our merciful God for them as well as for ourselves."

St. Augustine (354–430)

The great Doctor of Grace devotes extensive attention to the state of the dead. In the Enchiridion (ch. 69), he writes that prayers and the Sacrifice of the altar and almsgiving offered for the baptised dead profit those who, in their lifetimes, merited that such things might profit them. In the City of God (Book XXI, ch. 24), he interprets 1 Corinthians 3:15 ("saved, yet so as by fire") as referring to a purifying fire after death. In his Confessions (Book IX), he movingly prays for the soul of his mother Monica, asking God to forgive whatever sins she may have contracted in this life.

St. Gregory the Great (c. 540–604)

Pope St. Gregory the Great, in his Dialogues (Book IV), relates numerous accounts of souls appearing to request Masses and prayers. He teaches clearly that there is a purgatorial fire for minor faults after death: "It must be believed that there is a purgatorial fire before the judgement for certain light faults." He also teaches that the Holy Sacrifice of the Mass is the most powerful means of delivering souls from Purgatory.

St. John Chrysostom (c. 347–407)

The great preacher of Antioch and Constantinople urged the faithful to offer alms, prayers, and above all the Holy Sacrifice for the dead. In his Homilies on 1 Corinthians (Homily XLI), he speaks of the power of the Eucharistic offering to aid the departed: "Let us not hesitate to help those who have departed and to offer our prayers for them."

The Inscriptions of the Catacombs

Among the earliest archaeological evidences of the Christian faith are the inscriptions found in the Roman catacombs, dating from the second and third centuries. Many of these bear prayers for the peace and refreshment of the departed: "May God refresh thy soul," "May you live in peace," "May you live among the saints." These short formulae testify to the universal and spontaneous belief of the early Church that the living could aid the dead by prayer — a belief that only makes sense if the dead are in a state where such help avails them.