Who owes the debt? And to whom is it owed?
(And while we're at it, what is the "substance" of the debt - i.e. what is owed?)
Good questions. I guess we could say that in one sense it is like a debt, a moral debt, which must be paid. One pays a moral debt by sacrificing something. In another sense it could be called a poison that has entered into the spiritual blood of mankind which has to be gotten rid of. Adam and Eve are the root and the poison has spread through the entire family tree. The debt is owed to Nature. There's a poison in Nature.
It's remindful of a Shakespearian tragedy in which something is rotten in the state of Denmark and so the tragic machinery is set ineluctably in motion, unstoppable until there is once again a balance in Nature through sacrifice.
God's Nature is such that it's a contradiction for mankind to be let off without the debt being paid. The structure of the universe is moral.
Thinking about it further, I think "poison" makes more sense than "debt."
Edited by robinrohan, : No reason given.