Jamieson, Fausset & Brown

Returning to the subject of Co2 8:6. for you--Translate, "Which put the same earnest care for you into the heart of Titus," as was in myself. My care for you led me to "desire" him (Co2 8:6, Co2 8:17, "exhortation," the same Greek); but Titus had of himself the same care, whence he "accepted (gladly) my exhortation" (Co2 8:17) to go to you (Co2 8:6).