Romans 15:15-17

Still, on some points I have written to you very boldly and without reservation to remind you [about them] again, because of the grace that was given to me from God, to be a minister of Christ Jesus to the Gentiles. I minister as a priest the gospel of God, in order that my offering of the Gentiles may become acceptable [to Him], sanctified [made holy and set apart for His purpose] by the Holy Spirit. In Christ Jesus, then, I have found [legitimate] reason for boasting in things related [to my service] to God.