Before he leaned into the role and became one of history’s most famous correspondents, the Apostle Paul was a guy named Saul who let his rage reign on wayward Jews who he believed embraced a false messiah.
For a while Augustine of Hippo’s only telos was quantitative fun and he’d ride whatever vehicle promised to provide as much of it as he could squeeze in before chastity and continence (he meant the second definition of the word) caught up with him. My copy of Lives of the Saints mentions that before he took the vow Augustine “broke” with Manichaeism.