"But how is it to your credit if you receive a beating for doing wrong and endure it? But if you suffer for doing good and you endure it, this is commendable before God." NIV translation
One of the Hebrew names that describes God is El Tsaddik and it reminds us that God is just and right. Punishment for doing something wrong is commonly called discipline and punishment for doing good things is commonly called persecution. Discipline is, in fact, an act of love and is meant to better the person that is receiving the punishment. A good way to describe it is training and it is the basis for the word "disciple" which Jesus told us to go and make in the Great Commission. Persecution is the opposite and is given to stop someone from doing something good. For example, in many countries, it is illegal to share the Bible with others and if you do so you can be punished (persecuted). Standing firm in the face of this punishment (persecution) brings glory to God and can even bring others to faith in God. That is commendable before God. Do you have a personal story of standing up in the face of persecution? If so, you can share that and help others to stand in the same situation.
"To this you were called, because Christ suffered for you, leaving you an example, that you should follow in his steps." NIV translation
If I was to describe what it means to me to be a Christian, this is the verse I would use. It is so simple to understand but a challenge to live. We are simply to stand up and follow the example of Jesus Christ in all of our thoughts and actions because He paid the price for us. We are His bondslaves and He is the most terrific Master that anyone could have.
"'He committed no sin, and no deceit was found in his mouth.' When they hurled their insults at him, he did not retaliate; when he suffered, he made no threats. Instead, he entrusted himself to him who judges justly." NIV translation
Here, Peter quotes from Isaiah 53:9 which told of the sinless sacrifice of Jesus. Jesus was innocent of all and yet, when He suffered, He did not condemn but continued to put his trust in God to judge. A Hebrew name that describes God is El Tsaddik which means the just and right. Jesus knew that and trusted the Father to deal with His accusers. In fact, Jesus prayed that the Father would forgive them. That is tough to do but Jesus has given us the example of what to do and how to act when we are persecuted or wronged in any way by others. We can remember that, as Jesus was sinless, He suffered for no reason and did so in a manner that glorified God. We should do so as well.