1 Peter 3:13-14

13 Who is there to harm you if you prove zealous for what is good? 14 But even if you should suffer for the sake of righteousness, you are blessed. AND DO NOT FEAR THEIR INTIMIDATION, AND DO NOT BE TROUBLED,

When Peter says, “Who is there to harm you?” he is encouraging them to trust the Lord, and so, not to fear; for He will be with them (Isa. 41:10). If they, being righteous, suffer and fear intimidation they need not be troubled, only blessed by the Lord (Peter refers to Isa. 8:12-13).