3:8–12 ·“Everyone will know that you are my disciples, if you love one another” (John 13:35): this is the principle underlying these verses, with which Peter summarizes the whole section. Christians treasure their fellowship with one another. When they are faced with persecution, their common joy in their Lord becomes all the more precious. But Peter wants to impress on them that their relationship with each other is not entirely inward-looking. People will notice what they say to each other about the injustices they suffer (3:9). Consequently, the Lord must be their model. The quotation from Psalm 34:12–16 in verses 10–12 contains the key word of this entire section: “Do good.” It also highlights the use of the tongue, just as the end of the last section did (2:9; see also 2:1): the way …