Albert Barnes' Notes on the Whole Bible - Romans 15:19
Through mighty signs and wonders - By stupendous and striking miracles; see the note at Acts 2:43. Paul here refers, doubtless, to the miracles which he had himself performed; see Acts 19:11-12, “And God wrought special miracles by the hands of Paul,” etc.By the power of the Spirit of God - This may either be connected with signs and wonders, and then it will mean that those miracles were performed by the power of the Holy Spirit; or it may constitute a new subject, and refer to the gift of... read more
The Pulpit Commentary - Romans 15:18-19
For I will not dare to speak of any of those things which Christ hath not wrought through me unto the obedience of the Gentiles (meaning, I will not dare to speak, of any mere doings of my own, but only of those in which the power of Christ working through my ministry has been displayed) by word and deed, by the power of signs and wonders ( i.e. displays of miraculous power. It is noteworthy how St. Paul alludes incidentally in his letters to such "signs and wonders" having accompanied his... read more