By confession repentance is born

The narrower, then, the sphere of action of this second and only (remaining) repentance, the more laborious is its probation; in order that it may not be exhibited in the conscience alone, but may likewise be carried out in some (external) act. This act, which is more usually expressed and commonly spoken of under a Greek name, is ἐξομολόγησις , whereby we confess our sins to the Lord, not indeed as if He were ignorant of them, but inasmuch as by confession satisfaction is settled, of confession repentance is born; by repentance God is appeased.

…All this exomologesis (does), that it may enhance repentance; may honour God by its fear of the (incurred) danger; may, by itself pronouncing against the sinner, stand in the stead of God’s indignation, and by temporal mortification (I will not say frustrate, but) expunge eternal punishments.

Tertullian
On Repentance
Chapter IX

The soul is cleansed and purified upon death

Undoubtedly, when the soul, by the power of death, is released from its concretion with the flesh, it is by the very release cleansed and purified: it is, moreover, certain that it escapes from the veil of the flesh into open space, to its clear, and pure, and intrinsic light; and then finds itself enjoying its enfranchisement from matter, and by virtue of its liberty it recovers its divinity, as one who awakes out of sleep passes from images to verities. Then it tells out what it sees; then it exults or it fears, according as it finds what lodging is prepared for it, as soon as it sees the very angel’s face, that arraigner of souls, the Mercury of the poets.

Tertullian
A Treatise on the Soul
Chapter LIII

Man is not totally depraved because the image of God is not lost

For, as we have said before, the corruption of our nature is another nature having a god and father of its own, namely the author of (that) corruption.  Still there is a portion of good in the soul, of that original, divine, and genuine good, which is its proper nature.  For that which is derived from God is rather obscured than extinguished. It can be obscured, indeed, because it is not God; extinguished, however, it cannot be, because it comes from God. As therefore light, when intercepted by an opaque body, still remains, although it is not apparent, by reason of the interposition of so dense a body; so likewise the good in the soul, being weighed down by the evil, is, owing to the obscuring character thereof, either not seen at all, its light being wholly hidden, or else only a stray beam is there visible where it struggles through by an accidental outlet. Thus some men are very bad, and some very good; but yet the souls of all form but one genus: even in the worst there is something good, and in the best there is something bad. For God alone is without sin; and the only man without sin is Christ, since Christ is also God.

Tertullian
A Treatise on the Soul
Chapter XLI

Works cannot save a man

My most merciful and all-merciful God, O Lord Jesus Christ! In Thy great love, Thou didst come down and become flesh in order to save all. Again, I pray Thee, save me by Grace! If Thou shouldst save me because of my deeds, it would not be a gift, but merely a duty. Truly, Thou aboundest in graciousness and art inexpressibly merciful! Thou hast said, O my Christ: “He who believes in me shall live and never see death”. If faith in Thee saves the desperate, behold: I believe! Save me, for Thou art my God and my Maker. May my faith replace my deeds, O my God, for Thou wilt find no deeds to justify me. May my faith be sufficient for all. May it answer for me; may it justify me; may it make me a partaker of Thine eternal glory; and may Satan not seize me, O Word, and boast that He has torn me from Thy hand and fold. O Christ my Savior: save me whether I want it or not! Come quickly, hurry, for I perish! Thou art my God from my mother’s womb. Grant, O Lord, that I may now love Thee as once I loved sin, and that I may labor for Thee without laziness as once I labored for Satan the deceiver. Even more, I will labor for Thee, my Lord and God Jesus Christ, all the days of my life, now and ever and unto ages of ages. Amen.

Orthodox prayer for salvation by grace

Liberty only leads man further into sin

It is a remarkable phenomenon in nature that, if you put a plant into a large, wide pot or tub, it grows very much at the roots; they thicken, they give out many ramifications, but the tree itself does not grow much in height, and only yields few and small leaves and flowers. But if it is planted in a small pot, then the roots are small, but the plant itself grows rapidly in height and yields beautiful leaves and flowers (if it is the nature of the plant to produce flowers). Is it not the same with man? When he lives in full liberty, in abundance and prosperity, then he grows in body and does not grow in spirit, does not bring forth fruits — good works; whilst when he lives in straightness, in poverty, sickness, misfortune, and afflictions, in a word, when his animal nature is crushed, then he grows spiritually, bears flowers of virtue, ripens and brings forth rich fruits. This is why the path of those who love God is a narrow one.

St. John of Krondstat
On Good Works

We are nothing without Christ. All our good is His Good.

I am morally nothing without the Lord. I have really not one true thought or good feeling, and can do no good works; without Him I cannot drive away from me any sinful thought, any passionate feeling such as malice, envy, fornication, pride, and so forth. The Lord is the accomplishment of everything good that I think, feel, and do. O, how boundlessly wide is the Lord’s grace acting in me! The Lord is everything to me, and so clearly, so constantly. Mine — is only my sinfulness; mine — are only mine infirmities.

St. John of Krondstat
On Good Works

Luther exhorts his flock to private confession

So if there is a heart that feels its sin and desires comfort, it has here a sure refuge where it finds and hears God’s Word because through a human being God looses and absolves from sin….We urge you, however, to confess and express your needs, not for the purpose of performing a work but to hear what God wants to say to you. The Word or absolution, I say, is what you should concentrate on, magnifying and cherishing it as a great and wonderful treasure to be accepted with all praise and gratitude. …

Thus we teach what a wonderful, precious, comforting thing confession is, and we urge that such a precious blessing should not be despised, especially when we consider our great need. If you are a Christian, you need neither my compulsion nor the pope’s command at any point, but you will force yourself to go and ask me that you may share in it. However, if you despise it and proudly stay away from confession, then we must come to the conclusion that you are not a Christian and that you also ought not receive the sacrament [of the Altar]. For you despise what no Christian ought to despise, and you show thereby that you can have no forgiveness of sin. …

If you are a Christian, you should be glad to run more than a hundred miles for confession, not under compulsion but rather coming and compelling us to offer it. For here the compulsion must be reversed; we are the ones who must come under the command and you must come in freedom. We compel no one, but allow ourselves to be compelled, just as we are compelled to preach and administer the sacrament.

Therefore, when I exhort you to go to confession, I am doing nothing but exhorting you to be a Christian….For those who really want to be upright Christians and free from their sins, and who want to have a joyful conscience, truly hunger and thirst already.

Martin Luther
Book of Concord: A Brief Admonition to Confession

Free will is responsible for the fall, not God

It is, no doubt, an easy process for persons who take offense at the fall of man, before they have looked into the facts of his creation, to impute the blame of what happened to the Creator, without any examination of His purpose. To conclude:  the goodness of God, then fully considered from the beginning of His works, will be enough to convince us that nothing evil could possibly have come forth from God; and the liberty of man will, after a second thought, show us that it alone is chargeable with the fault which itself committed.

Tertullian
The Five Books Against Marcion, Book II
Chapter VI

The soul is cleansed from sin upon release from the body

In Platonic phrase, indeed, the body is a prison, but in the apostle’s it is “the temple of God,” because it is in Christ. Still, (as must be admitted,) by reason of its enclosure it obstructs and obscures the soul, and sullies it by the concretion of the flesh; whence it happens that the light which illumines objects comes in upon the soul in a more confused manner, as if through a window of horn. Undoubtedly, when the soul, by the power of death, is released from its concretion with the flesh, it is by the very release cleansed and purified: it is, moreover, certain that it escapes from the veil of the flesh into open space, to its clear, and pure, and intrinsic light; and then finds itself enjoying its enfranchisement from matter, and by virtue of its liberty it recovers its divinity, as one who awakes out of sleep passes from images to verities. Then it tells out what it sees; then it exults or it fears, according as it finds what lodging is prepared for it, as soon as it sees the very angel’s face, that arraigner of souls, the Mercury of the poets.

Tertullian
A Treatise on the Soul
Chapter LIII