Romans 15:20

And so I have made it my ambition to preach the gospel, not where Christ has already been named, lest I build on another man's foundation,

But we will not boast beyond proper limits, but will confine our boasting to the field God has apportioned to us, a field that reaches even to you.

For we are God's fellow workers; you are God's field, God's building.

having been built on the foundation of the apostles and prophets, Christ Jesus himself being the cornerstone,

Treasury of Scripture Knowledge

Yea, so have I strived to preach the gospel, not where Christ was named, lest I should build upon another man's foundation:

For we are not overextending ourselves, as if we did not reach to you; we were the first to come even as far as you with the gospel of Christ.

For we are God's fellow workers; you are God's field, God's building.

But we will not boast beyond proper limits, but will confine our boasting to the field God has apportioned to us, a field that reaches even to you.

having been built on the foundation of the apostles and prophets, Christ Jesus himself being the cornerstone,