The art of Rubens is rooted in an era darkened by the long shadow of devastating wars between Protestants and Catholics. In the wake of this profound schism, the Catholic Church decided to cease using force to propagate the faith. Like Gian Lorenzo Bernini, Peter Paul Rubens (1577-1640) sought to persuade his spectators to return to the true faith through the beauty of his art. While Rubens is praised for the "baroque passion" in his depictions of cruelty and sensuous abandon, nowhere did he kindle such emotional fire as in his religious subjects. Their color, warmth, and majesty--but also...