in mighty signs and wonders, by the power of the Spirit of God, so that from Jerusalem and round about to Illyricum I have fully preached the gospel of Christ.
Romans 15:19
Surrounding context
15:18 For I will not dare to speak of any of those things which Christ has not accomplished through me, in word and deed, to make the Gentiles obedient--
15:19 in mighty signs and wonders, by the power of the Spirit of God, so that from Jerusalem and round about to Illyricum I have fully preached the gospel of Christ.
15:20 And so I have made it my aim to preach the gospel, not where Christ was named, lest I should build on another man's foundation,