Peter called on Christians not to retaliate because

Peter called on Christians not to retaliate because vengeance belongs to God. In the book of 1 Peter, Peter exhorts Christians to live a holy life and to be prepared to suffer for the sake of Christ. He also reminds them not to repay evil with evil or insult with insult, but instead to bless those who persecute them. Peter emphasizes that revenge is not in their hands, but belongs to God. As believers, we are called to trust in God's justice and to leave vengeance to Him. This means that we must not take matters into our own hands and retaliate against those who wrong us, but instead, we must forgive and pray for them. By doing so, we will reflect the love and grace of Christ and overcome evil with good.