Because Christ also suffered for sins once, the righteous for the unrighteous, that he might bring you to God; being put to death in the flesh, but made alive in the spirit;

 This is not only one of the most difficult passages in Peter's letter, it is one of the most difficult in the whole New Testament; and it is also the basis of one of the most difficult articles in the creed, "He descended into Hell." It is, therefore, better first of all to read it as a whole and then to study it in its various sections. 