For in it is the righteousness of God revealed from faith to faith: as it is written, The just shall live by faith.
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Acacius of Caesarea
The righteousness of God is revealed in … the believer. Paul says that the revelation of righteousness is the approbation of those who do right. Thus he is able to say likewise that wrath is revealed toward those who do the opposite. The Jew has been brought from the faith of the appointed law to the faith which is through Christ and the Gentile from the faith of nature to the same faith in Jesus Christ. .
Paul says this because the righteousness of God is revealed in the one who believes, whether Jew or Greek. He calls it “the righteousness of God” because God freely justifies the ungodly by faith, without the works of the law, just as he says elsewhere: “That I may be found in him, not having a righteousness of my own, based on law, but that which is through faith in Christ, the righteousness from God that depends on faith.” He says that this same righteousness is revealed in the gospel when God grants faith to man, through which he may be justified. The truth and righteousness of God are revealed in this, when a man believes and confesses. The righteousness is of God because what he promised, he gave. Therefore, whoever believes that he has received what God promised through his prophets proves that God is just and is a witness of his righteousness. “Through faith for faith.” What does this mean, except that the faith of God is in him because he promised, and the faith of man is in hi...
This righteousness is the grace of the New Testament, by which the faithful are just as long as they live by faith, until by the perfection of righteousness they are brought to the facetoface vision, as they are also brought to the immortality of the body itself, by the perfection of salvation.
Speaking to those called from among the nations that were once barren, being formerly destitute of this husband, who is the Word,-desolate formerly,-of the bridegroom. "Now the just shall live by faith".
And further on again he adds, "The righteousness of God is revealed from faith to faith."
If you are a just man and live by faith, if you truly believe in God, why do you, who are destined to be with Christ and secure in the promise of the Lord, not rejoice that you are called to Christ and be glad that you are free from the devil? Treatise on Mortality
What is the overall meaning of the above? It is that our gospel is very great and truly marvelous if you pay careful attention to its power. For through faith in Christ all are saved, those whom the natural law has enlightened and those who follow the written law which was added to it. For when someone is informed about the resurrection from the dead, he learns that he too may share in this by obeying the gospel according to the design of the Savior. And this, says Paul, God had in ancient times announced through Habakkuk the prophet when he said: “The righteous shall live through faith.” .
For the justice of God. He does not here mean that justice, by which God is just in himself, but that justice, or sanctification, which he communicates to men, and by which they are justified and sanctified.
From faith to faith. That is, by faith, and an increase in faith, inasmuch as, by increasing in faith, we advance in virtues; as it is written, (Habacuc ii. 4.) the just man liveth by faith; including the love of God, hope, and other virtues. (Witham)
But he who has become just shall live, not for the present life only, but for that which is to come. And he hints not only this, but also another thing along with this, namely, the brightness and gloriousness of such a life. For since it is possible to be saved, yet not without shame (as many are saved of those, who by the royal humanity are released from punishment), that no one may suspect this upon hearing of safety, he adds also righteousness; and righteousness, not your own, but that of God; hinting also the abundance of it and the facility. For you do not achieve it by toilings and labors, but you receive it by a gift from above, contributing one thing only from your own store, believing. Then since his statement did not seem credible, if the adulterer and effeminate person, and robber of graves, and magician, is not only to be suddenly freed from punishment but to become just, and just too with the highest righteousness; he confirms his assertion from the Old Testament. And firs...
Whoever has become righteous through faith will live, not just in this life but in the one to come as well. Paul does not merely hint at this but adds something else along with it, viz., that such a life will be bright and glorious. For since it is possible to be saved yet still be ashamed (as, for example, criminals whose crimes have been remitted by imperial clemency), Paul adds “righteousness” here so that no one may think like this about salvation. This righteousness is not ours but belongs to God, and in saying this Paul hints to us that it is abundantly available and easy to obtain. For we do not get it by toil and labor but by believing. Then, since his statement does not seem credible, if the adulterer and homosexual, the graverobber and the magician are not only to be suddenly set free from punishment but to be made righteous, and righteous with the righteousness of God, Paul backs up his assertion from the Old Testament. … He sends the hearer back to the dispensations of God ...