The Martyrdom of Saint Matthew

The painting shows the martyrdom of Saint Matthew the Evangelist, author of the Gospel of Matthew. According to tradition, the saint was killed on the orders of the king of Ethiopia while celebrating Mass at the altar. The king lusted after his own niece, and had been rebuked by Matthew, for the girl was a nun, and therefore the bride of Christ. Cardinal Matthieu Cointerel, who had died several decades earlier, had laid down very explicitly what was to be shown: the saint being murdered by a soldier sent by the wicked king, some suitable architecture, and crowds of onlookers showing appropriate emotion. (See the article on the Contarelli Chapel).

The commission (which, strictly speaking, was from his patron, Cardinal Francesco Maria del Monte, rather than from the church itself), caused Caravaggio considerable difficulty, as he had never painted so large a canvas, nor one with so many figures. X-rays reveal two separate attempts at the composition before the one we see today, with a general movement towards simplification through reduction in the number of figures, and reduction – ultimately elimination – of the architectural element.

The figure in the background, about left-centre and behind the assassin, is a self-portrait by Caravaggio.