Isaiah

Joan Gascó's Isaiah, now in the Museu Nacional d'Art de Catalunya, is the fourth panel in his Old Testament figure series alongside Moses, David, and Abraham. Isaiah was the Old Testament prophet most extensively cited by Christian theology as a prophet of Christ's coming — his vision of the suffering servant, his prophecy of a virgin conceiving a son, and his description of the peaceful kingdom were all interpreted as direct predictions of the Incarnation and Passion. His presence in a typological altarpiece program therefore carried particular theological weight as the most Christological of all the Hebrew prophets. Gascó's figure participates in the long tradition of representing Isaiah as an aged, bearded sage holding a scroll — the standard iconographic formula for Old Testament prophets in European religious painting from the medieval period onward.

Gascó gives Isaiah the dignified frontal pose and prophetic attributes — scroll, aged face, and formal vestments — standard in the typological figure tradition. The Hispano-Flemish surface quality gives his garments a careful, jewel-like precision, and the series logic of the altarpiece program unifies this panel with its companions through consistent scale, palette, and compositional format.