3:8-13 Though Christians cannot always be exactly of the same mind, yet they should have compassion one of another, and love as brethren. If any man desires to live comfortably on earth, or to possess eternal life in heaven, he must bridle his tongue from wicked, abusive, or deceitful words. He must forsake and keep far from evil actions, do all the good he can, and seek peace with all men. For God, all-wise and every where present, watches over the righteous, and takes care of them. None could or should harm those who copied the example of Christ, who is perfect goodness, and did good to others as his followers.

10. will love—Greek, "wishes to love." He who loves life (present and eternal), and desires to continue to do so, not involving himself in troubles which will make this life a burden, and cause him to forfeit eternal life. Peter confirms his exhortation, 1Pe 3:9, by Ps 34:12-16.

refrain—curb, literally, "cause to cease"; implying that our natural inclination and custom is to speak evil. "Men commonly think that they would be exposed to the wantonness of their enemies if they did not strenuously vindicate their rights. But the Spirit promises a life of blessedness to none but those who are gentle and patient of evils" [Calvin].

evil … guile—First he warns against sins of the tongue, evil-speaking, and deceitful, double-tongued speaking; next, against acts of injury to one's neighbor.