The subject recalls the work of Liberating the prisoners, an activity practiced by the Body for the release of prisoners for arrears in paying taxes, due to a condition of poverty.First great follower Caravaggesco, Battistello immerses the figures in the darkest setting: l the angel takes the incredulous apostle by the hand and accompanies him out of the prison while the soldiers, below, remain asleep. In the darkness of the vast background, the wings of the angel, a window and a door on the left are barely visible. Battistello, to the full understanding of the pictorial art of the master Caravaggio, is accompanied by a drawing and coloristic definition acquired during the period he spent in Rome and sixteenth-century references, such as the sentinels taken by Raphael, or the strong color of Orazio Gentileschi, visible in the silvery glows of the robe of the angel.