Romans 15:16-20

that I should be a minister of Christ Jesus unto the Gentiles, ministering the gospel of God, that the offering up of the Gentiles might be made acceptable, being sanctified by the Holy Spirit. I have therefore my glorying in Christ Jesus in things pertaining to God. For I will not dare to speak of any things save those which Christ wrought through me, for the obedience of the Gentiles, by word and deed, in the power of signs and wonders, in the power of the Holy Spirit; so that from Jerusalem, and round about even unto Illyricum, I have fully preached the gospel of Christ; yea, making it my aim so to preach the gospel, not where Christ was already named, that I might not build upon another man’s foundation