Jamieson, Fausset & Brown

refuse--reject, avoid, have nothing to do with (Ti2 2:23; Tit 3:10). old wives' fables--anile myths (Ti1 1:4, Ti1 1:9; Tit 1:14). They are "profane," because leading away from "godliness" or "piety" (Ti1 1:4-7; Ti1 6:20; Ti2 2:16; Tit 1:1-2). exercise thyself--literally, "exercise thyself" as one undergoing training in a gymnasium. Let thy self-discipline be not in ascetical exercises as the false teachers (Ti1 4:3, Ti1 4:8; compare Ti2 2:22-23; Heb 5:14; Heb 12:11), but with a view to godliness or "piety" (Ti1 6:11-12).