‘And thus I aspired to preach the gospel, not where Christ was already named, that I might not build upon another man’s foundation; but as it is written, “They who had no news of Him shall see, and they who have not heard shall understand.” ’ Romans 15:20-21 (NAS)
The Holy Spirit moved Paul (via the pen of Tertius) to reference this quote from the prophet Isaiah in his closing remarks to the church at Rome.