Peter is advising new Christians how to react when non-Christians criticize them. The essence of the advice is for them not to worry about it but be ready to answer any questions. And if they do respond to the attacks, they are to do so with gentleness and reverence.
Do we find this advice helpful to our modern congregations? What are the criticisms that onlookers make against the church (or churches) today? Paul said for Christians not to fear what their critics fear. What do our critics fear? What are we afraid of? How do we respond to criticisms? What if our congregation is not criticized? Does that mean outsiders think we are doing everything right? Or, does it mean that we are doing anything that anybody even notices?