Catechesis: Original Sin

Augustine therefore consistently speaks in this way: original sin is not the nature itself, but an accidens vitium in natura (that is, a contingent lack and defect in nature). Before this quarrel broke out, this was the way people also spoke in our schools and churches—following the rules of logic—freely and without raising suspicion. Neither Dr. Luther nor other teachers of integrity within our pure Evangelical churches ever criticized such a definition.—SD I:56.