I'll try to dredge up a citation or two, but I remember noticing that for John Murray's fine exegesis of "the Imputation of Adam's Sin", that Original Sin was concluded as "unmediated" -- that is, technically, "immediate". The explanation was rather interesting, too: that everyone who attempted a mediate-imputation view for Adam's sin ran aground of some one or another issue within the doctrine of Original Sin or with specific Scriptures, one.
On first-blush it's always seemed to me that if Adam actually committed the sin, and I didn't, that somehow the thing was mediated through Adam to me. But in actuality the sin of Adam had an unmediated effect on me.
Plus the parallel point of Romans 5, that our righteousness is mediated through the sacrifice of Christ Jesus, is pretty clearly mediate imputation.
Again, most of this was described by Murray, but then no sound theology emerged with this concept.
On first-blush it's always seemed to me that if Adam actually committed the sin, and I didn't, that somehow the thing was mediated through Adam to me. But in actuality the sin of Adam had an unmediated effect on me.
Plus the parallel point of Romans 5, that our righteousness is mediated through the sacrifice of Christ Jesus, is pretty clearly mediate imputation.
Again, most of this was described by Murray, but then no sound theology emerged with this concept.