Romans 15:18-20

18I will not venture to speak of anything except what Christ has accomplished through me in leading the Gentiles to obey God by what I have said and done— 19by the power of signs and wonders, through the power of the Spirit of God. So from Jerusalem all the way around to Illyricum, I have fully proclaimed the gospel of Christ. 20It has always been my ambition to preach the gospel where Christ was not known, so that I would not be building on someone else’s foundation.