From Calvin's Commentary:
5 The term faith is employed here to mean a special faith, as we shall afterwards see from the context. A special faith is of such a kind as does not apprehend Christ wholly, for redemption, righteousness, and sanctification, but only in so far as miracles are performed in his name. Judas had a faith of this kind, and he wrought miracles too by means of it. Chrysostom distinguishes it in a somewhat different manner, calling it the faith of miracles, not of doctrines.3 This, however, does not differ much from the interpretation previously mentioned. By the gift of healings4 every one knows what is meant.
Chrysostom's words are: Pi>stin ouj pau>thn le>gei thtwn ajlla< thwn. "By this faith he means not that of doctrines, but that of miraeles." -- It was called by the schoolmen fides miractelorum (faith of miracles. ) -- Ed.
Addedum:
Before I get the question about how can miracles be done outside of God, please remember that the Egyptian magicians were able to imitate some of the miracles of God through Moses.
Here is Paul again "EVEN IF I had ALL faith, SO AS to move mountains, but had not charity, I am nothing".
Paul is clearly saying that an unlimited faith, ALL faith, is insufficient, if it is without love. He isn't talking about miraculous faith, he is qualifying his statement by saying EVEN IF I HAD ALL FAITH... In other words, faith alone doesn't save.
And though I bestow all my goods to feed [the poor], and though I give my body to be burned, and have not charity, it profiteth me nothing.
Here is the next verse. Again, no charity, then the things we DO are ALSO worthless. The context of these verses is that without proper interior disposition of love, faith or works of action are meaningless. We must possess love for our faith or our works to have meaning to God.
Paul is merely saying "faith without love is dead" and "works without love is dead". Consider the last verse:
And now abideth faith, hope, charity, these three; but the greatest of these [is] charity.
Love is the greatest of virtues. Without it, you won't be saved,
Regards
Thanks Harley!