In Dante's Purgatorio, purification from the sin of pride is shown in Canto XI. The poet/pilgrim sees a man carrying a great weight
...a living person would be able to climb and if I were not hindered by the stone
that overpowers my neck for its pride
I am Omberto, and pride has brought injury
not only to me but my whole family
dragging them with it into calamity. And here I must bear this because of that
until God is satisfied. What I would not
do among the living I do here among the dead.
What I would not do among the living I do here among the dead. The image is so much like Jacob Marley in A Christmas Carol that I have to think Dickens is deliberately echoing it. Pay now or pay later.
The scriptures refer to sin as a weight or a burden, more often even than the image of stain.