Jamieson, Fausset & Brown

Yea, &c.--rather, "Yet making it my study (compare Co2 5:9; Th1 4:11, Greek) so to preach the Gospel, not where Christ was [already] named, that I might not build upon another man's foundation: but (might act) as it is written, To whom no tidings of Him came, they shall see," &c.