Over at "Beggars All", Carrie is once again trying to show that Catholic notions of Salvation are false and legalistic. Of course, the implicit point is that their brand of Christianity is not legalistic. In my apologetics online I have discovered that there is a real tightrope that they feel a christian must walk.
Catholics are constantly accused of doing "too much" or "adding to" what (they interpret as) God's plan.
But simply having faith (faith alone) apparently is not enough. It must be a "saving faith", but keeping in mind what they say about "adding to" that creates a problem.
We apparently, in order to be saved, must add enough to our faith to turn it into "saving faith" without over doing it and adding too much. Hence the tightrope. It appears that the evangelical is always walking a fine line, trying to do just enough to be saved without overdoing it and thus being damned. That is a very difficult target to hit.