John Calvin on Romans 1:15

15. I am therefore ready, τὸ κατ ἐμὲ πρόθυμον, literally, “As to me there is readiness;” or, according to Stuart “There is a readiness so far as it respects me.” But, “I am ready,” or “I am prepared,” conveys the meaning sufficiently, without the other words, “As much as in me is.” By saying that he was prepared, he intimates that the event depended on another, even on God. — Ed. etc. He concludes what he had before said of his desire — that as he knew it to be his duty to spread the gospel among them, in order to gather fruit for the Lord, he was anxious to fulfill God’s calling, as far as he was allowed to do so by the Lord.

Romans 1:16-17

16. For I am not ashamed of the gospel of Christ: for it is the power of God unto salvation to every one that believeth; to the Jew first, and also to the Greek.

16. Non enim pudet me Evangelii Christi, quandoquidem potentia est Dei, in salutem omni credenti, Iudæoprimum, deinde Græco.

17. For therein is the righteousness of God revealed from faith to faith: as it is written, The just shall live by faith.

17. Nam justitia Dei in eo revelatur ex fide in fidem, sicut scriptum est, Justus ex fide sua vivet.