Within a theological context, the vices of despair and presumption concern our posture toward God’s ability and willingness to forgive sin. To presume forgiveness is a sin against God in his justice.23 Aquinas says, however, that the sin of presumption is “less grave than despair”24 because to despair is a sin against God in his goodness and mercy.
Hmm. But when trust is absolute, how is this different than presumption?
