Jamieson, Fausset & Brown

evil--in deed. railing--in word. blessing--your revilers; participle, not a noun after "rendering." knowing that--The oldest manuscripts read merely, "because." are--Greek, "were called." inherit a blessing--not only passive, but also active; receiving spiritual blessing from God by faith, and in your turn blessing others from love [GERHARD in ALFORD]. "It is not in order to inherit a blessing that we must bless, but because our portion is blessing." No railing can injure you (Pe1 3:13). Imitate God who "blesses" you. The first fruits of His blessing for eternity are enjoyed by the righteous even now (Pe1 3:10) [BENGEL].