There is an obscure passage in the First Letter of Peter where the old saint writes that after the crucifixion, Jesus went and preached to "the spirits in prison, who formerly did not obey" (3:19-20), and it's not altogether clear just what spirits he had in mind. Later on, however, he is not obscure at all. "The gospel was preached even to the dead," he says, "that though judged in the flesh like men, they might live in the spirit like God" (4:5-6).
"He descended into hell," is the way the Apostles' Creed puts it, of course. It has an almost blasphemous thud to it, sandwiched there between the muffled drums of "was crucified, dead, and buried" and the trumpet blast of "the third day he rose again from the dead." Christ of all people, in hell of all places! It strains the imagination to picture it, the Light of the World making his way through the terrible dark to save whatever ones he can. Yet in view of what he'd seen of the world during his last few days in the thick of it, maybe the transition wasn't as hard as you might think.
The fancifulness of the picture gives way to what seems, the more you turn it over in your mind, the inevitability of it. Of course that is where he would have gone. Of course that is what he would have done. Christ is always descending and redescending into hell.
"Come unto me, all ye that labor and are heavy laden" is spoken to all, whatever they've done or left undone, whichever side of the grave their hell happens to be on.