Rom 4:15

“Paul says that the law brings wrath in order to underline his point, [made in the previous verse,] that it is not the pathway to the inheritance of the promise.The law which brings transgression cannot be the law of Moses, because there was plenty of transgression before that came into force. Rather, it is the law which dwells in our members and leads us into sin. This is the same law which the apostle says brings wrath. For without a doubt it brings wrath when it leads its captive into sin. But where the law of sin does not obtain, then of course there is no transgression.”

“Now if it worketh wrath, and renders them liable for transgression, it is plain that it makes them so to a curse also. But they that are liable under a curse, and punishments, and transgression, are not worthy of inheriting, but of being punished and rejected. What then happens? faith comes, drawing on it the grace, so that the promise comes into effect. For where grace is, there is a remitting, and where remitting is, there is no punishment. Punishment then being removed, and righteousness succeeding from faith, there is no obstacle to our becoming heirs of the promise.”

“Then when he says for the law he proves the conditional statement through the effect or result of the law. First, he proposes the effect or result of the law; second, he proves it, at for where there is no law. He proves the conditional thus: If a promise is to be fulfilled through something which prevents its fulfillment, such a promise is void and the faith of believers futile. But the law prevents one from obtaining the inheritance, for the law works wrath; therefore, if the promise is to be fulfilled through the law, faith is made void: the promise is made of no effect. Now the law is said to bring wrath, i.e., vengeance, because through the law men were made deserving of God's vengeance: great is the wrath of the Lord that is kindled against us, because our fathers have not obeyed the words of this book, i.e., of the law (2 Kgs 22:13). But someone might suppose that the law brings wrath as far as legal ceremonies observed in the era of grace are concerned, in line with Galatians: if you receive circumcision, Christ will be of no advantage to you (Gal 5:2). However, what is stated here refers even to moral precepts, not because they command something which makes its observers deserving of God's wrath, but because the law commands and does not confer the grace to fulfill, according to 2 Corinthians: the letter kills, but the Spirit gives life (2 Cor 3:6), namely, because the Spirit also helpeth our infirmity (Rom 8:26). Then when he says for where there is no law, he shows how it brings wrath, saying: for where there is no law, neither is there transgression, because even though a person, with no law given, could sin by commission against what is naturally just, he is not called a transgressor, unless he violates a law: I looked at the transgressors with disgust, because they did not keep your commands (Ps 118:158). Yet every sinner can be called a transgressor, inasmuch as he transgresses the natural law: I have accounted all the sinners of the earth transgressors (Ps 118:119). However, it is more grievous to transgress at once the law of nature and the written law than the law of nature alone. Hence, the law having been given without the help of grace, transgression increased and deserved greater wrath.”

“In order to show that no man can be justified before God by the law, nor can the promise be given through the law, Paul says that "the law brings wrath." It was given in order to make transgressors guilty. But faith is the gift of God's mercy, so that those who have been made guilty by the law may obtain forgiveness. Therefore faith brings joy. Paul does not speak against the law but gives priority to faith. It is not possible to be saved by the law, but we are saved by God's grace through faith. Therefore the law itself is not wrath, but it brings wrath, i.e., punishment, to the sinner, for wrath is born from sin. For this reason Paul wants the law to be abandoned so that the sinner will take refuge in faith, which forgives sins, that he may be saved.Paul says that "where there is no law there is no transgression," because once the guilty have been removed from the power of the law and given forgiveness, there is no transgression. For those who were sinners because they had transgressed the law are now justified. For the law of works has ceased, that is, the observance of sabbaths, new moons, circumcision, distinction of foods and the expiation by a dead animal or the blood of a weasel.”