1 Peter 4:19 (NLT)
19 So if you are suffering in a manner that pleases God, keep on doing what is right, and trust your lives to the God who created you, for he will never fail you.

Peter is talking about the suffering of Christians in this world. He has told them they will go through trials they sometimes might not understand. He reminds them their suffering identified them with Christ who suffered greatly for our sins. But he also reminds them some suffering, consequences, is brought about by sin, such as murder, stealing, making trouble and prying into others business. So for those suffering for the right and just reasons they should keep on doing what is right and trust God who never fails us.

CIPA is also known as congenital analgia. It is a rare genetic condition where a person cannot feel and has never felt physical pain. For the most part cognition and touch remain normal to the extent the person can interact with the world. At first this sounds like something that could have its benefits. Instead of experiencing the excruciating pain of childbirth a woman could be exempt from the pain. A person could go to the dentist without fear of feeling the sensitivity of the drill. But never feeling pain means there are lessons that will never be learned. But there are serious drawbacks. A person can break their foot and not realize it. They can pick up a scalding pot and until blisters appear they didn’t know the pot was hot. They get injured in some serious, but they never feel the pain to know how to deal with it. Christians are not exempt from pain. They do suffer and feel the hurts and sorrows that come their way. But they grow from those experiences and learn to deal with the pain and learn how to heal from it. Without pain there is no realization of the damage sin causes and no remorse for wrong actions. So give thanks to God who created you to be able to feel the pain for sin to learn to move away from it. Just like touching a hot iron we learn that it is not a good thing to do.