A preparatory study for an unexecuted commission for two frescoes commissioned by Filippo Colonna, Prince of Sonnino. Pascoli identified the subjects as Cain and Abel and The Expulsion of Adam and Eve, but as two paintings from Mola's studio survive of Adam and Eve and The Return of the Spies from the Promised Land in the Cassa Depositi e Prestiti, Rome, it is likely that Pascoli confused the iconography of the second composition. A study for the composition, probably predating the present drawing, is at Rennes (Cocke, fig. 13) and a copy after a lost drawing is in the Ecole des Beaux-Arts, Paris, Cocke, fig. 15. In the present drawing Moses at the left leans on a frame of a door or a window for, as the viewpoint would suggest, the fresco was intended to be seen from below