Romans 15:17-20

17Therefore I glory in Christ Jesus in my service to God. 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.