Mary reads from a girdle book draped with a green cloth. The book is a normal attribute for Mary, as she is the "seat of wisdom" and this image might be based on the figure in Robert Campin's "Virgin Annunciate". She wears a crown adorned with flowers and stars, and is dressed as a bride. The inscription on the arched throne above reads: "She is more beautiful than the sun and the army of the stars; compared to the light she is superior. She is truly the reflection of eternal light and a spotless mirror of God". Like Mary, John the Baptist holds a holy book – an unusual attribute, and one of 18 books in the set of panels. He wears a green mantle over a cilice of camel-hair. He looks towards the Almighty in the center panel, with his hand also raised in blessing, uttering the words most typically associated with him, ("Behold the Lamb of God").