“Corrupters of families will not inherit the kingdom of God. And if they who do these things according to the flesh suffer death, how much more if a man corrupt by evil teaching the faith of God for the sake of which Jesus Christ was crucified? A man become so foul will depart into unquenchable fire: and so will anyone who listens to him” –Saint Ignatius of Antioch, (Letter to the Ephesians 16:1–2 [A.D. 110])
“No more is it possible for the evildoer, the avaricious, and the treacherous to hide from God than it is for the virtuous. Every man will receive the eternal punishment or reward which his actions deserve. Indeed, if all men recognized this, no one would choose evil even for a short time, knowing that he would incur the eternal sentence of fire. On the contrary, he would take every means to control himself and to adorn himself in virtue, so that he might obtain the good gifts of God and escape the punishments” -Saint Justin Martyr, Father of the Church, (First Apology 12 [A.D. 151])
“Fixing their minds on the grace of Christ, [the martyrs] despised worldly tortures and purchased eternal life with but a single hour. To them, the fire of their cruel torturers was cold. They kept before their eyes their escape from the eternal and unquenchable fire” -The Martyrdom of Polycarp 2:3 (A.D. 155)
“[God will] send the spiritual forces of wickedness, and the angels who transgressed and became apostates, and the impious, unjust, lawless, and blasphemous among men into everlasting fire” -Saint Irenaeus, Father of the Church, (Against Heresies 1:10:1 [A.D. 189]).
“We shall be raised therefore, all with our bodies eternal, but not all with bodies alike: for if a man is righteous, he will receive a heavenly body, that he may be able worthily to hold converse with angels; but if a man is a sinner, he shall receive an eternal body, fitted to endure the penalties of sins, that he may burn eternally in fire, nor ever be consumed. And righteously will God assign this portion to either company; for we do nothing without the body. We blaspheme with the mouth, and with the mouth we pray. With the body we commit fornication, and with the body we keep chastity. With the hand we rob, and by the hand we bestow alms; and the rest in like manner. Since then the body has been our minister in all things, it shall also share with us in the future the fruits of the past” -Cyril of Jerusalem, Father and Doctor of the Church, (Catechetical Lectures 18:19 [A.D. 350]).
“Temporal punishments are suffered by some in this life only, by some after death, by some both here and hereafter, but all of them before that last and strictest judgment. But not all who suffer temporal punishments after death will come to eternal punishments, which are to follow after that judgment” -Saint Augustine, Father and Doctor of the Church, (The City of God 21:13 [A.D. 419]).
“That there should be some fire even after this life is not incredible, and it can be inquired into and either be discovered or left hidden whether some of the faithful may be saved, some more slowly and some more quickly in the greater or lesser degree in which they loved the good things that perish, through a certain purgatorial fire” -Saint Augustine, Father and Doctor of the Church, (Handbook on Faith, Hope, and Charity 18:69 [A.D. 421]).
“I do not think that part from the felicity of Heaven, there can be a joy comparable to that experienced by the souls in Purgatory. An incessant communication from God renders their joy more vivid from day to day: and this communication becomes more and more intimate, to the extent that it consumes the obstacles still existing in the soul….On the other hand, they endure pain so intense, that no tongue is able to describe it. Nor is any mind capable of comprehending the smallest spark of that consuming fire, unless God should show it to him by a special grace.” -Saint Catherine of Siena, Doctor of the Church
“The more one longs for a thing, the more painful does deprivation of it become. And because after this life, the desire for God, the Supreme Good, is intense in the souls of the just (because this impetus toward him is not hampered by the weight of the body, and that time of enjoyment of the Perfect Good would have come) had there been no obstacle; the soul suffers enormously from the delay.” -Saint Thomas Aquinas, The Angelic Doctor
“Let us help and commemorate them. If Job’s sons were purified by their father’s sacrifice [Job 1:5], why would we doubt that our offerings for the dead bring them some consolation? Let us not hesitate to help those who have died and to offer our prayers for them” -John Chrysostom, Father and Doctor of the Church, (Homilies on First Corinthians 41:5 [A.D. 392]).
“Weep for those who die in their wealth and who with all their wealth prepared no consolation for their own souls, who had the power to wash away their sins and did not will to do it. Let us weep for them, let us assist them to the extent of our ability, let us think of some assistance for them, small as it may be, yet let us somehow assist them. But how, and in what way? By praying for them and by entreating others to pray for them, by constantly giving alms to the poor on their behalf. Not in vain was it decreed by the apostles that in the awesome mysteries remembrance should be made of the departed. They knew that here there was much gain for them, much benefit. When the entire people stands with hands uplifted, a priestly assembly, and that awesome sacrificial Victim is laid out, how, when we are calling upon God, should we not succeed in their defense? But this is done for those who have departed in the faith, while even the catechumens are not reckoned as worthy of this consolation, but are deprived of every means of assistance except one. And what is that? We may give alms to the poor on their behalf.” -John Chrysostom, Father and Doctor of the Church, (Homilies on Philippians 3:9–10 [A.D. 402]).
“The clients of this most merciful Mother are very fortunate. She helps them both in this life and in the next, consoling them and sponsoring their cause in Purgatory. For the simple reason that the Souls in Purgatory need help so desperately, since they cannot help themselves, our Mother of Mercy does so much more to relieve them. She exercises over these Poor Souls, who are the spouses of Christ, particular dominion, with power to relieve them and even deliver them from their pains. See how important it is then to have devotion to this good Lady, because she never forgets her servants as long as they suffer in these flames. If she helps all the Poor Souls, she is especially indulgent and consoling to her own clients.” -Saint Alphonsus Liguori, Doctor of the Church, The Glories of Mary
“I am the Mother of all the Poor Souls, for my prayers serve to mitigate their sufferings every single hour that they remain there (purgatory).” -Our Blessed Lady to Saint Bridget
“You are My Mother, the Mother of Mercy, and the consolation of the souls in Purgatory.” -Saint Bridget to our Lady