According to Peter, the fact that judgement would begin with the household of God means that

According to Peter, the fact that judgment would begin with the household of God means that Christians would face God's judgment before the rest of the world. This does not mean that Christians should court persecution to win glory or that the persecution of Christians would be less severe. Instead, it means that Christians, who are part of the household of God, would be judged first based on their faithfulness to God and their obedience to His commands. This concept is similar to the idea of a refining fire that purifies gold and silver, and it is intended to help Christians grow in their faith and become more like Christ. Ultimately, it reminds us that all people, both Christians and non-Christians, will face God's judgment on the last day and be held accountable for their actions.