Romans 15:20

so earnestly desirous have I been to preach the gospel, not where Christ had been named, lest I should build on another man's foundation;

2 Corinthians 10:13-16

But we will not boast ourselves with respect to regions not measured to us; but according to the measure of the line which God, who measures, has appointed for us to reach even to you.

1 Corinthians 3:9-15

For we are fellow-laborers for God: you are God's field, you are God's building.

Ephesians 2:20-22

having been builded upon the foundation of the apostles and prophets, Jesus Christ himself being the chief corner-stone,

Treasury of Scripture Knowledge

Summary

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

Bible References

So

2 Corinthians 10:14
For we do not stretch ourselves too far, as if we did not come to you: for even as far as to you, have we already come in the gospel of the Christ,

Build

1 Corinthians 3:9
For we are fellow-laborers for God: you are God's field, you are God's building.
2 Corinthians 10:13
But we will not boast ourselves with respect to regions not measured to us; but according to the measure of the line which God, who measures, has appointed for us to reach even to you.
Ephesians 2:20
having been builded upon the foundation of the apostles and prophets, Jesus Christ himself being the chief corner-stone,