A 1648 etching by Rembrandt depicting Saint Jerome at his studies beneath a gnarled willow tree, accompanied by his lion.

This etching, dated 1648, depicts Saint Jerome in a moment of quiet study. Rembrandt positions the saint at the base of a large, gnarled pollard willow, a tree type frequently appearing in his work. Jerome is shown with his traditional attributes: the lion, visible to the left of the tree trunk, and a skull, resting near his desk. The composition relies on the contrast between the heavy, textured bark of the willow and the delicate, sparse lines used to define the saint and the surrounding environment.

Rembrandt employs a combination of etching and drypoint to achieve varying degrees of shadow and light. The tree trunk is rendered with deep, vigorous lines that suggest age and decay, while the figure of the saint is sketched with lighter, more economical strokes. The lion, often a symbol of Jerome's wilderness retreat, is integrated into the shadow of the tree, appearing almost as an extension of the natural form. The background remains largely open, allowing the viewer to focus on the interaction between the scholar and his immediate surroundings.

Unlike many of his contemporaries who placed Jerome in elaborate architectural settings, Rembrandt opts for a naturalistic, almost rustic environment. This choice shifts the focus from the saint's ecclesiastical status to his role as a solitary intellectual. The work demonstrates Rembrandt's mastery of the copper plate, where the economy of line conveys both physical weight and atmospheric depth. The inclusion of the date and signature at the bottom left confirms the work as a mature example of his printmaking practice. This print remains a primary example of how the artist used the medium to explore themes of solitude, wisdom, and the passage of time through the lens of traditional iconography.