A bearded man sits in half-length view, his hands pressed together in front of his chest in a gesture of prayer. His eyes are lowered, the lids almost closed, and his expression is solemn and absorbed. The man's thick gray hair and full beard are rendered with loose, textured brushstrokes, giving a sense of age and gravity.

He wears a heavy, earth-toned cloak that envelops his shoulders and arms, its folds and shadows painted with broad, soft strokes. In front of him, an open book rests on a table, its pages illuminated by a shaft of light that falls across the lower part of the painting. The writing on the book's pages is suggested by dark, calligraphic marks, hinting at the presence of sacred or devotional text.

The background is almost entirely dark, with only the man's face, hands, and the open book emerging from the gloom. Light strikes the man's forehead, nose, and clasped hands, creating a dramatic contrast with the deep shadows that envelop his figure. The color palette is dominated by browns, ochres, and muted grays, reinforcing the somber and contemplative mood.

The paint surface shows visible brushwork, especially in the rendering of the hair, beard, and the folds of the cloak, where the strokes are broad and textured. The composition centers the figure, with the hands and book forming a diagonal that leads upward toward the man's face. Small details, such as the roughness of the man's knuckles and the subtle highlights on his fingernails, reveal close observation and a sensitive approach to aging flesh. An Elderly Man in Prayer was created by Rembrandt in the 1660s in the Netherlands.