You did too.
It's not what the church fathers say about cleansing from sin that counts but what Jesus says about it.
And just now is 1 John 1:9 wrong?
God’s grace is a gift to us, but one does not receive this gift if they are in the state of mortal sin.
They HAVE to in order to be free from sin.
There is no grace needed for those who have no sin.
Romans 5:20
Now the law came in to increase the trespass, but where sin increased, grace abounded all the more,
If sanctifying grace dwells in your soul when you die, then you have the equipment you need, and you can live in heaven (though you may need to be purified first in purgatory; cf. 1 Cor. 3:12–16)
Purgatory doesn't cleanse sin.
Hebrews 9:22 Indeed, under the law almost everything is purified with blood, and without the shedding of blood there is no forgiveness of sins.
ONLY the sacrifice of Jesus, the atonement, is what cleanses from sin.
Galatians 2:15-21 We ourselves are Jews by birth and not Gentile sinners; yet we know that a person is not justified by works of the law but through faith in Jesus Christ, so we also have believed in Christ Jesus, in order to be justified by faith in Christ and not by works of the law, because by works of the law no one will be justified.
But if, in our endeavor to be justified in Christ, we too were found to be sinners, is Christ then a servant of sin? Certainly not! For if I rebuild what I tore down, I prove myself to be a transgressor. For through the law I died to the law, so that I might live to God. I have been crucified with Christ. It is no longer I who live, but Christ who lives in me. And the life I now live in the flesh I live by faith in the Son of God, who loved me and gave himself for me. I do not nullify the grace of God, for if righteousness were through the law, then Christ died for no purpose.
your comment: “And just now is 1 John 1:9 wrong?” I didn’t say that, but you ignored the rest of the story:
Christ told the apostles to follow his example: “As the Father has sent me, even so I send you” (John 20:21). Just as the apostles were to carry Christ’s message to the whole world, so they were to carry his forgiveness: “Truly, I say to you, whatever you bind on earth shall be bound in heaven, and whatever you loose on earth shall be loosed in heaven” (Matt. 18:18).
This power was understood as coming from God: “All this is from God, who through Christ reconciled us to himself and gave us the ministry of reconciliation” (2 Cor. 5:18).
Your comment: “There is no grace needed for those who have no sin.” The Blessed Mother is Full of Grace.
Your comment: “ They HAVE to in order to be free from sin.”
It was implied that one continues to be in mortal sin. If one repents and receives forgiveness through the Sacrament of Reconciliation, then graces are received.
You can obtain supernatural life by yielding to actual graces you receive. God keeps giving you these divine pushes, and all you have to do is go along.
For instance, he moves you to repentance, and if you take the hint you can find yourself in the
confessional, where the guilt for your sins is remitted (John 20:21–23). Through the sacrament of penance, through your reconciliation to God, you receive sanctifying grace. But you can lose it again by sinning mortally (1 John 5:16–17).
Keep that word in mind: mortal. It means death. Mortal sins are deadly sins because they kill off this supernatural life, this sanctifying grace. Mortal sins can’t coexist with the supernatural life, because by their nature such sins are saying “No” to God, while sanctifying grace would be saying “Yes.”
Your comment: “Purgatory doesn’t cleanse sin.”
All Christians agree that we won’t be sinning in heaven. Sin and final glorification are utterly incompatible. Therefore, between the sinfulness of this life and the glories of heaven, we must be made pure. Between death and glory there is a purification.
Thus, the Catechism of the Catholic Church states: “All who die in God’s grace and friendship, but still imperfectly purified, are indeed assured of their eternal salvation; but after death they undergo purification, so as to achieve the holiness necessary to enter the joy of heaven. The Church gives the name purgatory to this final purification of the elect, which is entirely different from the punishment of the damned” (CCC 1030–1).
The concept of an after-death purification from sin and the consequences of sin is also stated in the New Testament in passages such as 1 Corinthians 3:11–15 and Matthew 5:25–26, 12:31–32.
The doctrine of purgatory, or the final purification, has been part of the true faith since before the time of Christ. The Jews already believed it before the coming of the Messiah, as revealed in the Old Testament (2 Macc. 12:41–45) as well as in other pre-Christian Jewish works, such as one which records that Adam will be in mourning “until the day of dispensing punishment in the last years, when I will turn his sorrow into joy” (The Life of Adam and Eve 46–7). Orthodox Jews to this day believe in the final purification, and for eleven months after the death of a loved one, they pray a prayer called the Mourner’s Kaddish for their loved one’s purification.
Jews, Catholics, and the Eastern Orthodox have always historically proclaimed the reality of the final purification. It was not until the Protestant Reformation in the sixteenth century that anyone denied this doctrine. As the quotes below from the early Church Fathers show, purgatory has been part of the Christian faith from the very beginning.
Some imagine that the Catholic Church has an elaborate doctrine of purgatory worked out, but there are only three essential components of the doctrine: (1) that a purification after death exists, (2) that it involves some kind of pain, and (3) that the purification can be assisted by the prayers and offerings by the living to God. Other ideas, such that purgatory is a particular “place” in the afterlife or that it takes time to accomplish, are speculations rather than doctrines.