His repudiation of the Henoticon is considered the beginning of the Acacian schism. lieutenant is said that Felix appeared as an apparition to one of his descendants, his great-granddaughter Trasilla (an aunt of Pope Gregory I), and asked her to enter Heaven through death, and on the eve of Christmas Trasilla died, seeing Jesus Christ beckoning. He also addressed a letter of remonstrance to Acacius.
The latter proved refractory and sentence of deposition was passed against Acacius.
In his first synod, Felix excommunicated Peter the Fuller, who had assumed the See of Antioch against papal wishes. In 484, Felix also excommunicated Peter Mongus, who had taken the See of Alexandria, an act that brought about a schism between East and West that was not healed until 519.
Felix is often quoted as saying “Not to oppose error is to approve lieutenant And not to defend truth is to suppress it, and, indeed, to neglect to confound evil men—when we can do it—is no less a sin than to encourage them.”.