Why did Girolamo Savonarola continue preaching after his excommunication?

Girolamo Savonarola continued to preach after his excommunication because he considered the papal decree to be "null and void" due to significant errors in its form and substance. Furthermore, he viewed the censure as a politically motivated "unworthy arrangement" pushed by his enemies, rather than a legitimate spiritual mandate.1

When Rome conditioned the withdrawal of the excommunication on Florence joining the Holy League, Savonarola returned to the pulpit in 1498 to deliver sermons on the Book of Exodus. During this period of defiance, he also advocated for a general church council to address the corruption he perceived within the Roman Court. Ultimately, his refusal to remain silent was driven by his commitment to his moral crusade and his belief that he was acting in the interest of church reform, even as it led him toward martyrdom.123