Rom 1:5

“Paul says that he has received grace and apostleship through Christ, the mediator between God and men—grace with respect to his patience in many labors and apostleship with respect to his preaching authority. For Christ was himself called an apostle, i.e., one who was sent by the Father, because he said that he had been sent to preach the gospel to the poor. And everything which is his, he gives to his disciples also. Grace is said to be spread on his lips. For he gives grace to his apostles, by which those who are struggling may say: "I worked harder than any of them, though it was not I but the grace of God which is with me." … It was only through the grace which had been given to the apostles that the Gentiles, who were strangers from the covenant of God and from the life of Israel, could believe in the gospel. Through this grace it is said that they came to faith because of the preaching of the apostles, and it is recorded that by the grace given to them the sound of the name of Christ went out into all the world, reaching even those who were at Rome.”

“"By Whom we have received grace and Apostleship for obedience to the faith." See the candor of the servant. He wishes nothing to be his own, but all his Master's. And indeed it was the Spirit that gave this. Wherefore He saith, "I have many things to say unto you, but ye cannot bear them now. Howbeit when He, the Spirit of Truth, is come, He will guide you into all truth": and again, "Separate Me Paul and Barnabas." And in the Epistle to the Corinthians, he says, that "to one is given by the Spirit the word of wisdom, to another the word of knowledge"; and that It divideth all as It willeth. And in addressing the Milesians, he says, "Over which the Holy Ghost hath made you shepherds and overseers." You see, he calls the things of the Spirit, the Son's, and the things of the Son, the Spirit's. "Grace and Apostleship;" that is, it is not we that have achieved for ourselves, that we should become Apostles. For it was not by having toiled much and labored that we had this dignity allotted to us, but we received grace, and the successful result is a part of the heavenly gift. "For obedience to the faith." So it was not the Apostles that achieved it, but grace that paved the way before them. For it was their part to go about and preach, but to persuade was of God, Who wrought in them. As also Luke saith, that "He opened their heart"; and again, To whom it was given to hear the word of God. "To obedience;" he says not, to questioning and parade of argument but "to obedience." For we were not sent, he means, to argue, but to give those things which we had trusted to our hands. For when the Master declareth aught, they that hear should not be nice and curious handlers of what is told them, but receivers only; for this is why the Apostles were sent, to speak what they had heard, not to add aught from their own stock, and that we for our part should believe-that we should believe what?-"concerning His Name." Not that we should be curious about the essence, but that we should believe on the Name; for this it was which also wrought the miracles. For it says, "in the Name of Jesus Christ rise up and walk." And this too requireth faith, neither can one grasp aught of these things by reasoning. "Among all nations, among whom are ye also the called of Jesus Christ." What? did Paul preach then to all the nations? Now that he ran through the whole space from Jerusalem to Illyricum, and from thence again went forth to the very ends of the earth, is plain from what he writes to the Romans; but even if he did not come to all, yet still what he says is not false, for he speaks not of himself alone, but of the twelve Apostles, and all who declared the word after them. And in another sense, one should not see any fault to find with the phrase, if about himself, when one considers his ready mind, and how that after death he ceaseth not to preach in all parts of the world. And consider how he extols the gift, and shows that it is great and much more lofty than the former, since the old things were with one nation, but this gift drew sea and land to itself.”

“Paul received grace in baptism and apostleship when he was sent by the Holy Spirit, for apostle means "sent" in Greek. The purpose of this was that the Gentiles might submit not to the law but to faith.”

“Paul preserves the main point of his case very well, so that no one would dare say that he has been led to the gospel because of the merits of his previous life. How could one claim this, when even the apostles themselves … could not have received their own apostleship unless they had first … received grace, which cleanses and justifies sinners?”

“Note the gratitude. Nothing, he says, is ours, but everything has been received by us through the Son. I received the apostleship and grace through the Spirit. "He," says the Lord, "will guide you" (John 16:13). And the Spirit says: "Set apart for Me Saul and Barnabas" (Acts 13:2), and: "to one is given through the Spirit the word of wisdom" (1 Cor. 12:8). What does this mean? That what belongs to the Spirit belongs to the Son and vice versa. Grace, he says, and apostleship "we received," that is, we became apostles not by our own merits, but by grace from above. But persuasion is also a work of grace; for the work of the apostles was to go and preach, but to persuade the listeners belongs entirely to God. "To bring about the obedience of faith." We were sent, he says, not for disputation nor for investigation or proof, but "to bring about the obedience of faith," so that those being taught would listen, believing without any objection. We received grace "to bring about the obedience of faith among all the nations" — not I alone, but the other apostles as well: for Paul did not reach all nations; unless someone should say that if not during his lifetime, then after his death he goes to all nations through his epistle. And they would believe upon hearing the name of Christ, not about His essence; for the name of Christ worked miracles, and it itself demands faith, because it too cannot be grasped by reason. See what a gift the preaching of the Gospel is: it was imparted not to one nation, as the Old Testament was, but to all nations.”

“After commending Christ in his origin and power, he now commends him in his liberality, which is shown by the gifts he conferred on believers. And he sets out two gifts. One is common to all believers, namely grace, by which we are restored. We receive this from God through Christ; hence, he says, through whom we believers have received grace; grace and truth came through Jesus Christ (John 1:17); and below: by whom also we have access through faith to this grace wherein we stand (Rom 5:2). For it is fitting that just as all things were made by the Word (John 1:3), so by the Word as by the art of God Almighty all things should be restored; as an artisan repairs a house by means of the same art as he built it: God was pleased to reconcile through him all things, whether on earth or in heaven (Col 1:20). The other spiritual gift was conferred on the apostles. This he touches on when he says, and apostleship, which is the chief office in the Church: God has appointed in the Church, first, apostles (1 Cor 12:28). 'Apostle' is the same as 'sent.' For they were sent by Christ, bearing, as it were, his authority and office: as the Father has sent me, even so I send you (John 20:21), i.e., with full authority. Hence Christ himself is called an apostle: consider Jesus, the apostle and high priest of our confession (Heb 3:1); hence, too, through him as chief apostle or one sent, the others secondarily obtained apostleship: he chose twelve whom he called apostles (Luke 6:13). Now he sets out the grace of apostleship as a preface both because they obtained apostleship not through their merits but from grace: I am the least of the apostles, unfit to be called an apostle; but by the grace of God I am what I am (1 Cor 15:9); and because apostleship cannot be worthily obtained unless sanctifying grace precedes it: grace was given to each of us according to the measure of Christ's gift (Eph 4:7). Then he describes this apostleship: first, from its aim, when he adds, for obedience to the faith. As if to say: we have been sent with this aim, to induce men to obey the faith. Obedience finds its scope in things we can do voluntarily; in matters of faith, since they are above reason, we consent voluntarily. For no one believes unless he wills to, as Augustine says. Consequently, in matters of faith, the following has a place: but have obeyed from the heart unto that form of doctrine into which you have been delivered (Rom 6:17). Concerning this aim it is said: I appointed you that you should go and bear fruit and that your fruit should abide (John 15:16). Second, it is described from its extent when he says in all the nations, because they were directed to instruct not only the Jews but all nations: go, therefore, and make disciples of all nations (Matt 28:19). Paul in particular had received a mandate to all nations, so that the words of Isaiah apply to him: it is too light a thing that you should be my servant to raise up the tribes of Jacob and to restore the preserved of Israel: I will give you as a light to the nations (Isa 49:6). Yet the Jews were not excluded from his apostolate, especially those who lived among the gentiles: inasmuch as I am an apostle to the gentiles, I magnify my ministry in order to make my fellow Jews jealous, and thus save some of them (Rom 11:13–14). Third, from the completeness of its power when he says for his name, i.e., in his place and with his authority. For as Christ is said to have come in the Father's name and had the Father's full authority, so the apostles are said to have come in Christ's name, as though in Christ's person: what I have forgiven, if I have forgiven anything, has been for your sake in the person of Christ (2 Cor 2:10). Or by these words it is described from its end, i.e., to broadcast his name without seeking any earthly reward for himself: he is a chosen instrument of mine to carry my name (Acts 9:15). Hence, he urged all believers to do the same: do everything in the name of Jesus Christ (Col 3:17).”

“After the resurrection Christ was revealed as the Son of God in power. He gave grace to make sinners righteous and appointed apostles, of whom Paul says here that he is one, so that the apostleship might be granted by the grace of God's gift and not because the apostles were Jews. They received this authority from God the Father through Christ the Lord, so that as representatives of the Lord they might make his teaching acceptable by signs of power. Unbelieving Jews, who had been jealous of this power when they saw it in the Savior, were all the more tormented at seeing it admired by the masses in his servants. For power bears witness to the teaching, so that although what is preached is incredible to the world, it might be made credible by deeds. He says that the apostles have been sent to preach the faith to all nations, that they might obey and be saved, that the gift of God may appear to have been granted not only to the Jews but to all the nations, and that this is the will of God, to have pity on all in Christ and through Christ, by the preaching of his ambassadors.”