The Baptism of Christ by Nicolas Poussin https://www.nga.gov/artworks/32692-baptism-christ
Although Nicolas Poussin’s work exerted an enormous influence on the development of French seventeenth-century painting, the artist perfected his style in Rome, incorporating the lessons of Renaissance and contemporary Italian painters into his own idiom. Poussin’s Baptism of Christ is one of a series of canvases illustrating the Seven Sacraments executed from 1638-1642 for his friend and patron Cassiano dal Pozzo.
which this painting was a part, hung in the main room of Cassiano’s 16th century Roman