Het martelaarschap van de heilige Erasmus (middenpaneel)

The Martyrdom of Saint Erasmus center panel at Sint-Pieterskerk, Leuven, commissioned in 1456, depicts the saint's torture with unflinching specificity: Erasmus's intestines are slowly wound out of his body on a winch while he remains miraculously alive in prayer. The graphic violence, rendered with Bouts's characteristic calm Flemish precision, was theologically purposeful—saints' martyrdom demonstrated the triumph of faith over bodily suffering, encouraging viewers to hold firm in their own trials. The work established Bouts's reputation in Leuven and prepared the way for the major civic and ecclesiastical commissions that would define his mature career. The altarpiece remains in the church for which it was painted.

The martyrdom scene is rendered with Bouts's precise technique and characteristic emotional restraint, the torture instruments and the saint's response depicted with clinical accuracy rather than dramatic exaggeration.