They think it is strange that you don't run with them into the same excess of riot, blaspheming:

 No fully satisfactory meaning has ever been found for this verse; but we think that the best explanation is as follows. For mortal man, death is the penalty of sin. As Paul wrote: "Sin came into the world through one man and death through sin, and so death spread to all men because all men sinned" ( Romans 5:12). Had there been no sin, there would have been no death; and, therefore, death in itself is a judgment. So Peter says, all men have already been judged when they die; in spite of that Christ descended to the world of the dead and preached the gospel there, giving them another chance to live in the Spirit of God. 