The Cumaean Sibyl with a Putto
The Cumaean Sibyl was one of Apollo's priestesses. She foretold the coming of Christ, predicting that he would be born to a Virgin in a stable in Bethlehem and that he would be crucified. The angel holds a stone tablet inscribed, 'O LIGNVM BEATVM IN QVO DEVS EXTENSVS EST' (O blessed wood upon which God was
stretched out).