The Apostle Paul
Romans 15:17BSB·traditional attribution

Therefore I exult in Christ Jesus in my service to God.

John Calvin Reformed @genevareformer

17. I have then, etc. After having in general commended his own calling, that the Romans might know that he was a true and undoubted apostle of Christ, he now adds testimonies, by which he proved that he had not only taken upon him the apostolic office conferred on him by God’s appointment, but that he had also eminently adorned it.

Matthew Henry Presbyterian @wholebiblehenry

The apostle here gives some account of himself and of his own affairs. Having mentioned his ministry and apostleship, he goes on further to magnify his office in the efficacy of it, and to mention to the glory of God the great success of his ministry and the wonderful things that God had done by him, for encouragement to the Christian church at Rome, that...

Commenting on Romans 15:17-21

John Gill Reformed Baptist @doctorgill

For I will not dare to speak of any of those things,.... He suggests that the false teachers did speak of things which were not done by them at all, and much less were what Christ had done by them; and signifies that he was a conscientious man, and could speak nothing but what was truth; his conscience would not suffer him, nor could he...