Illyricum
     a country to the north-west of Macedonia, on the eastern shores
     of the Adriatic, now almost wholly comprehended in Dalmatia, a
     name formerly given to the southern part of Illyricum (2 Tim.
     4:10). It was traversed by Paul in his third missionary journey
     (Rom. 15:19). It was the farthest district he had reached in
     preaching the gospel of Christ. This reference to Illyricum is
     in harmony with Acts 20:2, inasmuch as the apostle's journey
     over the parts of Macedonia would bring him to the borders of
     Illyricum.