And the reason for this also refers to the very nature of that new world. It was in a sense the difficulty of a new dimension. Christ was not only born on the level of the world, but even lower than the world. The first act of the divine drama was enacted, not only on no stage set up above the sightseer, but on a dark and curtained stage sunken out of sight; and that is an idea very difficult to express in most modes of artistic expression. It is the idea of simultaneous happenings on different levels of life. Something like it might have been attempted in the more archaic and decorative medieval art. But the more the artists learned of realism and perspective, the less they could depict at once the angels in the heavens and the shepherds on the hills, and the glory in the darkness that was under the hills. Perhaps it could have been best conveyed by the characteristic expedient of some of the medieval guilds, when they wheeled about the streets a theatre with three stages one above the other, with heaven above the earth and hell under the earth. But in the riddle of Bethlehem it was heaven that was under the earth.
There is in that alone the touch of a revolution, as of the world turned upside down. It would be vain to attempt to say anything adequate, or anything new, about the change which this conception of a deity born like an outcast or even an outlaw had upon the whole conception of law and its duties to the poor and outcast. It is profoundly true to say that after that moment there could be no slaves. There could be and were people bearing that legal title until the Church was strong enough to weed them out, but there could be no more of the pagan repose in the mere advantage to the state of keeping it a servile state. Individuals became important, in a sense in which no instruments can be important. A man could not be a means to an end, at any rate to any other man’s end. All this popular and fraternal element in the story has been rightly attached by tradition to the episode of the Shepherds; the hinds who found themselves talking face to face with the princes of heaven. But there is another aspect of the popular element as represented by the shepherds which has not perhaps been so fully developed; and which is more directly relevant here.