Of the necessity of Purgatory. How terrible it is.
When I look at God, I see no gate to Paradise, and yet because God is all mercy he who wills enters there. God stands before us with open arms to receive us into His glory. But well I see the divine essence to be of such purity, greater far than can be imagined, that the soul in which there is even the least note of imperfection would rather cast itself into a thousand Hells than find itself thus stained in the presence of the Divine Majesty. Therefore the soul, understanding that Purgatory has been ordained to take away those stains, casts itself therein, and seems to itself to have found great mercy in that it can rid itself there of the impediment which is the stain of sin.
No tongue can tell nor explain, no mind understand, the grievousness of Purgatory. But I, though I see that there is in Purgatory as much pain as in Hell, yet see the soul which has the least stain of imperfection accepting Purgatory, as I have said, as though it were a mercy, and holding its pains of no account as compared with the least stain which hinders a soul in its love. I seem to see that the pain which souls in Purgatory endure because of whatever in them displeases God, that is what they have willfully done against His so great goodness, is greater than any other pain they feel in Purgatory. And this is because, being in grace, they see the truth and the grievousness of the hindrance which stays them from drawing near to God.