Romans 15:14-18

And concerning you, my brothers and sisters, I myself also am convinced that you yourselves are full of goodness, filled with all knowledge and able also to admonish one another.

But I have written very boldly to you on some points so as to remind you again, because of the grace that was given to me from God,

to be a minister of Christ Jesus to the Gentiles, ministering as a priest the gospel of God, so that my offering of the Gentiles may become acceptable, sanctified by the Holy Spirit.

Therefore in Christ Jesus I have found reason for boasting in things pertaining to God.

For I will not presume to speak of anything except what Christ has accomplished through me, resulting in the obedience of the Gentiles by word and deed,