Peter was speaking to a crowd of people who had not understood or recognized who Jesus was. Now they do. They ask, "What can we do now?"
Who needs to read today's scripture--the Peters among us or the crowds who didn't get it before?
It's far easier than we would want it to be to imagine religious people whose lives are being lived largely without any acknowledgement or recognition of Christ.
Peter denied knowing Christ and did so explicitly. He was afraid. Many later Christians don't voice any explicit denial, but their allegiance to Christ's teachings might be pretty hard to discern.
Who needs to read today's scripture?
Some of Christ's teachings may be easier for us to fit into our daily lives than others. Most of us can go through the day without committing acts of violence or stealing anything, for example. Harder though is giving up selfishness or fear.
Who needs to be asking the question, "What can we do now?"
Peter said, "The promise is for you, for your children, and for all who are far away."
We need to tell this story so others can hear, and we need to listen to this story so we can live the lives that Christ intends for us. We may be far away in calendar years from Peter's questioners, but do we really need to be far away in recognizing the need for repentance?