Judith is the only female character to whom a book of the Old Testament is dedicated. The heroine, with a cunning stratagem, succeeds in saving her people from the siege of the Assyrian army, commanded by Holofernes. Pretending to want to betray the Jewish people, she is welcomed into the enemy camp. After a sumptuous banquet, he sneaks up to the general's bed, now overcome by the abuse of wine, and kills him with his own scimitar. While many artists had focused on the worst moment of the episode, the beheading of Holofernes, here Piazzetta depicts the moment immediately preceding it. Judith with one hand unties the lace that holds the scimitar tied and with the other pulls aside the curtain surrounding the bed. The scene thus takes on a strong theatrical flavor: the curtain-curtain opens, sheds the light on Judith, represented here as a sophisticated woman of rank, and reveals to the viewer's eyes a moment of suspense, marked by strong contrasts of light, in which the body of Holofernes already seems unmade and lifeless.