The Tiburtine Sibyl announces the advent of Christ to Augustus

The Tiburtine Sibyl Announces the Advent of Christ to Augustus, painted around 1660, depicts the legend in which the emperor Augustus was shown a vision of the Virgin and Child by the sibyl. This late work by Cortona reflects the continuing importance of linking imperial Roman history with Christian revelation—a theme central to the decoration of Roman churches and palaces throughout the Baroque period. His position alongside Bernini and Borromini as one of the three great creators of Roman Baroque style gave him access to the most prestigious commissions in 17th-century Rome, and his approach to illusionistic ceiling painting defined the grandest ambitions of the era.

The composition contrasts the kneeling emperor with the elevated vision of the Madonna, creating a dramatic vertical axis. Cortona's late style retains his characteristic warmth and fluency while showing a greater restraint in the figure arrangements.