Romans 1:24

The details here seem to correspond to the faith of the church, in that for the above-mentioned reasons, for just cause those who in their wickedness suppress the truth revealed by God are abandoned by God, and because they are abandoned they are given over to the desires of their heart. The desires of their heart were that they should disgrace their bodies in uncleanness and abuse and that, with similar lack of discernment toward the worship of God, they should abandon the glory of the incorruptible God for the wicked and base forms of men and animals and think so little of themselves as to live like irrational beasts when in fact they were rational persons.To those who deny that the good God is also the just judge, we ask what they might say about these words of the apostle: "God gave them up in the lusts of their hearts to impurity, to the dishonoring of their bodies among themselves."
Therefore Marcion and all those of his school who have sprung forth like the offspring of serpents will not dare to touch the answers to these questions, even with the tips of their fingers. Due to this blunder they have already rejected the Old Testament, where such matters are commonplace. But what good did that do them? For they are no less discomfited by similar problems in the New Testament. But we, who say that the one good and just God of the law and prophets and Gospels is the Father of Christ, give the same explanation in the New as in the Old Testament, calling on him who has placed in Zion a stone of stumbling and a rock of offense to reveal to us by the Holy Spirit his own offense and the scandal of the apostolic text, by which irresolute minds appear to be offended.

Paul says that because the Gentiles had deified relics and images of things, so as to dishonor the Creator God, they were given over to illusions. They were given over, not so that they could do what they did not want to do, but so that they could carry out exactly what they desired. And this is the goodness of God.To "hand over" means to permit, not to encourage or to force, so that they were helped by the devil to carry out in practice the things which they conceived in their lusts. For they never thought of doing anything good. Therefore they were handed over to uncleanness that they might willingly damage each other's bodies with abuse. For even now there are men of this type who are said to dishonor each other's bodies. When the thought of the mind is wrong, the bodies are said to be dishonored. Is not a stain on the body a sign of sin in the soul? When the body is contaminated, nobody doubts that there is sin in the soul.

Hence he shows, that even of the perversion of the laws it was ungodliness which was the cause, but He "gave them up," here is, let them alone. For as he that hath the command in an army, if upon the battle lying heavy upon him he retreat and go away, gives up his soldiers to the enemies not by thrusting them himself, but by stripping them of his own assistance; thus too did God leave those that were not minded to receive what cometh from Him, but were the first to bound off from Him, though Himself having wholly fulfilled His own part. But consider; He set before them, for a form doctrine, the world; He gave them reason, and an understanding capable of perceiving what was needful. None of these things did the men of that day use unto salvation, but they perverted to the opposite what they had received. What was to be done then? to drag them by compulsion and force? But this were not to make them virtuous. It remained then, after that, for Him to leave them alone, and this He did too, that in this way, if by no other, having by trial come to know the things they lusted after, they might flee from what was so shameful. For if any that was a king's son, dishonoring his father, should choose to be with robbers and murderers, and them that break up tombs, and prefer their doings to his father's house; the father leaves him, say, so that by actual trial, he may learn the extravagance of his own madness. But how comes he to mention no other sin, as murder, for instance, or covetousness, or other such besides, but only unchasteness? He seems to me to hint at his audience at the time, and those who were to receive the Epistle. "To uncleanness, to dishonor their own bodies between themselves."

Note the emphasis here, as it is most severe. For they stood not in need of any others, it means, to do insolent violence to them, but the very treatment the enemies would have shown them, this they did to themselves. And then, taking up the charge again...

This means that God abandoned them to the desires of their own hearts. For Paul says that they got what they deserved from God.

When the evil will receives power to accomplish its purpose, this comes from the judgment of God, in whom there is no unrighteousness. His punishment is carried out in this way as well as in other ways. It is not less just merely because it is hidden. The wicked man only knows that he is being punished when some manifest penalty makes him feel, against his will, the evil of the sin which he committed willingly.

Many are left to themselves, to their own hurt.… A man that has asked for great wealth may have received it to his own hurt. While he was without it he had little to fear; as soon as he has possession of it he has become a prey to the stronger.

By "gave them up" Paul means that God permitted this to happen. He simply abandoned them because they had fallen into extreme ungodliness.

The word "gave over" is used instead of "permitted," just as a physician treating a sick person, seeing that he neglects his diet and does not obey him, gives him over to a greater illness, that is, leaves him and permits him to follow his own will and thus not be freed from the illness. Some, however, understood the expression "God gave them over" as follows: He gave them over to the insult and insolence they had committed against God, just as we say: so-and-so was ruined by money, whereas money does not ruin, but the misuse of it does; or: Saul was corrupted by his kingdom, that is, by the misuse of his kingdom. Thus the pagans were given over to uncleanness by their own depravity, so that there was no need for others to dishonor them, but they themselves brought dishonor upon themselves; for such are impure passions. And for what were they given over to uncleanness? For having dishonored God; for whoever does not wish to know God is immediately corrupted in morality as well, as David also says: "The fool has said in his heart, There is no God," and then: "they are corrupt and have done abominable works" (Ps. 13:1).

Then when he says wherefore, God gave them up he mentions the punishment for such a sin. Here it should be noted that man holds a place midway between God and the beasts and has something in common with both: with God, intellectuality; with animals, sensibility. Therefore, just as man exchanged that which was of God for what is bestial, so God subjected the divine in man, namely reason, to what is of the beast in him, his sensual desire, as it is stated: man cannot abide in his pomp (Ps 49:20), i.e., understand the likeness of the divine image in him through reason, he is like the beasts that perish. This, therefore, is why he says wherefore, God gave them up to the desires of their heart, so that their reason would be ruled by the desires of the heart, namely, lustful affections, about which he says below: make not provision for the flesh in its concupiscences (Rom 13:14). But this is contrary to man's natural order, in which reason dominates the sense appetites: its desire is under you and you must master it (Gen 4:7). Consequently, he releases men to the desires of the heart as to cruel masters: I will give over the Egyptians into the hand of a hard master (Isa 19:4).

It is chiefly with respect to the sense appetite that a certain bestial derangement is present in carnal sins. For the pleasures of touch, which delight gluttony and lust, are common to us and to beasts. Hence, they are more detestable, being more brutish, as the Philosopher says in Ethics III. This is designated when he says unto uncleanness, which refers to sins of the flesh, as is clear from Ephesians: every fornicator or impure man (Eph 5:5); because it is especially through such sins that man turns to and is drawn to what is beneath him. For a thing is said to be impure or tainted from being mixed with something base, as silver mixed with lead. Hence, in explanation he continues: to dishonor, by base and unclean acts, their own bodies among themselves, i.e., not as though compelled by others, for example, by savages, but they do this among themselves spontaneously. Below: has the potter no right over the clay, to make out of the same lump one vase for honor and another for dishonor? (Rom 9:21). Namely, for menial use.

But since impurity of this kind is a sin, it seems that God would not give men over to it: God himself tempts no one to evil (Jas 1:13). The answer is that God does not give men over to impurity directly, as though inclining a man's affection toward evil, because God ordains all things to himself: the Lord has made everything for himself (Prov 16:4), whereas something is sinful through its turning from him. But he gives men over to sin indirectly, inasmuch as he justly withdraws the grace through which men are kept from sinning, just as a person would be said to cause another to fall, if he removed the ladder supporting him. In this way, one's first sin is a cause of the next, which is at the same time a punishment for the first one.

To understand this it should be noted that one sin can be the cause of another directly or indirectly: directly, inasmuch as from one sin he is inclined to another in any of three ways. In one way, when it acts as a final cause; for example, when someone from greed or envy is incited to commit murder. Second, when it acts as a material cause, as gluttony leads to lust by administering the material. Third, when it acts as a moving cause, as when many repetitions of the same sin produce a habit inclining a person to repeat the sin. Indirectly, when the first sin merits the exclusion of grace, so that once it is removed, a man falls into another sin. In this way the first sin is the cause of the second indirectly or incidentally, inasmuch as it removes the preventative.

It should be borne in mind, however, that sin as such cannot be a punishment, because we suffer punishment against our will, whereas sin is voluntary, as Augustine says. But because sin has certain features contrary to the will of the sinner, it is by reason of them that a sin is called a punishment of a previous sin. One of these features is something preceding the sin, as the withdrawal of grace, from which it follows that a man sins. Another is something that accompanies the sin either interiorly, as that the mind is disarranged; hence Augustine says in Confessions I: you have commanded it, O Lord, and so it comes to pass that every disarranged mind is a punishment to itself; or in regard to its outward acts, which involve difficulties and labors, as sinners aver: we journeyed through trackless deserts (Wis 5:7). The third feature is something that follows the sin, such as remorse of conscience, bad reputation, and so on.