On the Image of God in the Word, Calvin

The ministry of the word, I say, is like a looking-glass For the angels have no need of preaching, or other inferior helps, nor of sacraments, for they enjoy a vision of God of another kind;  and God does not give them a view of his face merely in a mirror, but openly manifests himself as present with them. We, who have not as yet reached that great height, behold the image of God as it is presented before us in the word, in the sacraments, and, in fine, in the whole of the service of the Church. –John Calvin