Peter has not left the subject of persecution as the connecting word ‘For’ makes clear. There are two judgments in this verse: first the judgment of the house of God delivered through the persecutions of the world, and later the judgment of the world delivered by God himself.
But if God does not completely spare his children whom he loves from hardship and chastises them for their good, what can the unrighteous expect from him? Instead of responding to his gracious message, they despise the gospel offer and treat it as something worthless. They insult God and choose to worship dead idols rather than the one who created them. They refuse to obey his commandments, and harden their hearts against the voice of conscience, and they hate and persecute his beloved children as much as lies within their power. They are not loved by God but will be sent from his presence for ever. At that point they will no longer be able to appeal to his mercy, for he will have shut the door of opportunity and they will be convinced that he will never change his mind. Peter does not give details of what the unrighteous can expect, but the horror of their final state is implied strongly. It will certainly take into account the persecutions which they inflicted on the righteous during this life.