Why did Calvinists become influential in Dutch towns during the early revolt?

During the early revolt against Spanish rule, Calvinism gained significant influence among the urban middle and intellectual classes due to its emphasis on discipline, organization, and the glorification of hard work. Unlike other reforming movements of the time, Calvinism provided a realistic and structured framework that appealed to those seeking an alternative to the centralizing and often tyrannical policies of the Spanish crown.1

The movement’s popularity was bolstered by its communal nature, including the singing of psalms and the establishment of organized communities. As the revolt progressed, Calvinists became the driving force behind the resistance; for many, their faith was fundamentally incompatible with the rule of the Catholic Spanish monarch, Philip II, making reconciliation impossible. By the later stages of the conflict, Calvinist minorities effectively ruled the provinces that remained within the union, viewing their religion as the essential "cement" that held the Dutch revolt together against external pressure.12