Paul only wants to preach to people who have never heard of Christ. AT: "Because of this, I want to preach the good news in places where people have never heard of Christ" (See: [[rc://en/ta/man/translate/figs-explicit]])
Paul speaks of his ministry work as if he were building a house on a foundation. AT: "in order that I might not be simply continuing the work that someone else already started. I do not want to be like a man who builds a house on someone else's foundation" (See: [[rc://en/ta/man/translate/figs-metaphor]])