The tenderness of St. John for his little lamb is the chief motive of the picture. He carries it on his left arm, supporting the weight on his knee, and the innocent creature puts its nose close to the prophet's face. The lamb is the accepted symbol of St. John the Baptist, in allusion to the words with which he addressed Jesus at the Jordan, "Behold the lamb of God." The same figure is used in the book of Revelation, where the Lamb is described "in the midst of the throne." Standing for the person of Christ himself, St. John holds the sacred emblem with reverence. To understand why his face is lifted in this direction we must remember that his glance is directed toward the vision in the dome just above.
The angel figures of this pendentive are among the most beautiful and characteristic of the myriad throng of the cupola. The impression made by this great spirit company upon one standing beneath the dome has been described in some lines by Aubrey de Vere:—
"Creatures all eyes and brows and tresses streaming,
By speed divine blown back; within all fire
Of wondering zeal, and storm of bright desire.
Round the broad dome the immortal throngs are beaming,
With elemental powers the vault is teeming;
We gaze, and gazing join the fervid choir,
In spirit launched on wings that ne'er can tire."
While the spirits in the upper part of the cupola are massed so closely together that we do not see the full beauty of each one, these in our picture may be studied separately. There are six in all, and their purpose is to call the attention of the worshippers to the prophet. The two in the rear, whose bodies are hidden in the clouds, gaze upon him adoringly. One on each side points with outstretched finger to the lamb, as if repeating the Baptist's words, "Behold the lamb of God." The angel astride the cloud in front was interrupted in the same task by a little fellow suddenly shooting out from the clouds beneath him. He peers into the opening at one side, but still lifts his left hand towards the prophet above him.
The six figures are arranged in a semicircle, and their slender limbs and lithe bodies trace rhythmic lines of grace. The most charming of the company is perhaps he at the right, whose eyes meet ours with a bewitching smile.