Gregory the Great
Catena Aurea · Matthäusevangelium 7
Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven. Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works? And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.
(Mor. xx. 7.) By this sentence it is given to us to learn, that among men charity and humility, and not mighty works, are to be esteemed. Whence also now the Holy Church, if there be any miracles of heretics, despises them, because she knows that they have not the mark of holiness. And the proof of holiness is not to work miracles, but to love our neighbour as ourselves, to think truly of God, and of our neighbour better than of ourselves.