Jamieson, Fausset and Brown on 1 Peter 3:17

17. better--One may object, I would not bear it so ill if I had deserved it. Peter replies, it is better that you did not deserve it, in order that doing well and yet being spoken against, you may prove yourself a true Christian [Gerhard].

if the will of God be so--rather as the optative is in the oldest manuscripts, "if the will of God should will it so." Those who honor God's will as their highest law (1Pe 2:15) have the comfort to know that suffering is God's appointment (1Pe 4:19). So Christ Himself; our inclination does not wish it.