Unto IIyricum— Though it is evident from this passage, that St. Paul, before the date of this Epistle, which was about the year 58, had preached the Gospel in these regions, it is observable that St. Luke takes no notice hereof in the history of the Acts; where he also omits to mention the journey which the Apostle took to Arabia on his first conversion, and several other remarkable facts referred to in the 11th chapter of the second Epistle to the Corinthians, and elsewhere. And it is very possible, that the visit to Crete, when Titus was left behind to ordain elders, (Titus 1:5.) might be of this number. See Doddridge, Wall, and Calmet.
Related Commentaries of Romans 15:19
Romans 15:19
19 Through mighty signs and wonders, by the power of the Spirit of God; so that from Jerusalem, and round about unto Illyricum, I have fully preached the gospel of Christ.