Jamieson, Fausset and Brown on Titus 2:5

5. keepers at home--as "guardians of the house," as the Greek expresses. The oldest manuscripts read, "Workers at home": active in household duties (Pr 7:11; 1Ti 5:13).

good--kind, beneficent (Mt 20:15; Ro 5:7; 1Pe 2:18). Not churlish and niggardly, but thrifty as housewives.

obedient--rather "submissive," as the Greek is translated; (see on Ep 5:21, 22; Ep 5:24).

their own--marking the duty of subjection which they owe them, as being their own husbands (Ep 5:22; Col 3:18).

blasphemed--"evil spoken of." That no reproach may be cast on the Gospel, through the inconsistencies of its professors (Tit 2:8, 10; Ro 2:24; 1Ti 5:14; 6:1). "Unless we are virtuous, blasphemy will come through us to the faith" [Theophylact].