Could they know that all the while the sibyl thought herself standing beside the shepherds' fire, and that she listened to a faint sound which came trembling through the dead-still night? She heard it long before she marked that it did not come from earth, but from the sky. At last she raised her head; then she saw light, shimmering forms glide forward in the darkness. They were little flocks of angels, who, singing joyously, and apparently searching, flew back and forth above the wide plain.
While the sibyl was listening to the angel-song, the Emperor was making preparations for a new sacrifice. He washed his hands, cleansed the altar, and took up the other dove. And, although he exerted his full strength to hold it fast, the dove's slippery body slid from his hand, and the bird swung itself up into the impenetrable night.
The Emperor was appalled! He fell upon his knees and prayed to his genius. He implored him for strength to avert the disasters which this night seemed to foreshadow.
Nor did the sibyl hear any of this either. She was listening with her whole soul to the angel-song, which grew louder and louder. At last it became so powerful that it wakened the shepherds. They raised themselves on their elbows and saw shining hosts of silver-white angels move in the darkness in long swaying lines, like migratory birds. Some held lutes and cymbals in their hands; others held zithers and harps, and their song rang out as merry as child-laughter, and as carefree as the lark's thrill. When the shepherds heard this, they rose up to go to the mountain city, where they lived, to tell of the miracle.
They groped their way forward on a narrow, winding path, and the sibyl followed them. Suddenly it grew light up there on the mountain: a big, clear star kindled right over it, and the city on the mountain summit glittered like silver in the starlight. All the fluttering angel throngs hastened thither, shouting for joy, and the shepherds hurried so that they almost ran. When they reached the city, they found that the angels had assembled over a low stable near the city gate. It was a wretched structure, with a roof of straw and the naked cliff for a back wall. Over it hung the Star, and hither flocked more and more angels. Some seated themselves on the straw roof or alighted upon the steep mountain-wall back of the house; others, again, held themselves in the air on outspread wings, and hovered over it. High, high up, the air was illuminated by the shining wings.
The instant the Star kindled over the mountain city, all Nature awoke, and the men who stood upon Capitol Hill could not help seeing it. They felt fresh, but caressing winds which traveled through space; delicious perfumes streamed up about them; trees swayed; the Tiber began to murmur; the stars twinkled, and suddenly the moon stood out in the sky and lit up the world. And out of the clouds the two doves came circling down and lighted upon the Emperor's shoulders.
When this miracle happened, Augustus rose, proud and happy, but his friends and his slaves fell on their knees.
"Hail, Cæsar!" they cried. "Thy genius hath answered thee. Thou art the god who shall be worshiped on Capitol Hill!"
And this cry of homage, which the men in their transport gave as a tribute to the emperor, was so loud that the old sibyl heard it. It waked her from her visions. She rose from her place on the edge of the cliff, and came down among the people. It was as if a dark cloud had arisen from the abyss and rushed down the mountain height. She was terrifying in her extreme age! Coarse hair hung in matted tangles around her head, her joints were enlarged, and the dark skin, hard as the bark of a tree, covered her body with furrow upon furrow.
Potent and awe-inspiring, she advanced toward the Emperor. With one hand she clutched his wrist, with the other she pointed toward the distant East.