Romans 15:19-22

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. Yea, so have I strived to preach the gospel, not where Christ was named, lest I should build upon another man's foundation: But as it is written, To whom he was not spoken of, they shall see: And they that have not heard shall understand. For which cause also I have been much hindered from coming to you.