Augustine of Hippo on Gratitude

"For I am holy." When I hear these words I recognize the voice of the Saviour. But shall I take away my own? Certainly when He speaks thus He speaks in inseparable union with His body. But can I say, "I am holy"? If I mean a holiness that I have not received, I should be proud and a liar; but if I mean a holiness that I have received - as it is written: "Be ye holy because I the Lord your God am holy" - then let the body of Christ say these words. And let this one man, who cries from the ends of the earth, say with his Head and united with his Head: "I am holy." … That is not foolish pride, but an expression of gratitude. If you were to say that you are holy of yourselves, that would be pride; but if, as one of Christ's faithful and as a member of Christ, you say that you are not holy, you are ungrateful. …"