It's hard to wrap my head around the "justice" I'm thinking of. Where i see it is with the first debtor after he did not reciprocate the forgiveness. The part that is hard to wrap my head around, living in this century, is how harsh the punishment was.
The grace comes in at the same time that compassion filled the one wanting repayment.
Greed so blinded the first debtor that he forgot the grace and forgiveness that was just given to him which produced a incredibly hard heart and unforgiveness.
Love, grace, forgiveness, compassion, mercy what a great and awesome God and Savior we serve