In 1096, the pope preached the First Crusade at S. Tecla in Milanese territory. Only two of Arnulf's acts as bishop survive and he is buried in the Abbey of San Pietro al Monte at Civate.
In 1096, Pope delivered a sermon that initiated the First Crusade at S. Tecla within Milanese territory.  Only two of Arnulf's actions as Bishop remain documented, and his burial site is located in the Abbey of San Pietro al Monte at Civate.