In II Timothy II.4, the apostle Paul forbids the servant of God to involve himself in saecularia negotia. While traditionally understood as a reference to commercial activities, for Carolingian thinkers the verse became a way to reflect on the political engagement of prelates and the relationship between religious and secular duties carried out by ecclesiastical office‐holders. This article traces the changing significance of II Timothy II.4 in the first half of the ninth century, as councils and exegetes grappled with the question of whether there was a ‘neutral’ secular beyond the saecularia negotia prohibited by Paul?