Peter the apostle wrote this letter and it was intended to encourage the Roman Christians who were dealing with terrible persecution from Nero. Paul was believed to be in Spain at the time, so Peter took it upon himself to care for the suffering Christians. Also, remember…Peter was fulfilling Jesus’ command to continue to “feed my sheep” (John 21). Though the Christians in Rome had endured much, Peter was writing them to warn them of impending future persecutions to come. And it may suprise us to see the theme of I Peter focuses on the grace of God…even through trials.