In the apocryphal "Book of the Conversation of God with Moses on Mount Sinai," translated by the Rev. W. Cureton from an Arabic MS. of the fifteenth century, and published by the Philobiblon Society of London, the idea of the eternal watchfulness of God is thus beautifully allegorized: "Then Moses said to the Lord, O Lord, dost thou sleep or not?

Masaccio, we see, was peopling a visible world; the Spanish chapel painters were merely allegorizing, as agents of holiness.