# How do we recognize a heretic?

**URL:** <https://forum.catholictalk.net/t/how-do-we-recognize-a-heretic/4254>\
**Category:** Apologetics\
**Created:** [September 29, 2026, 9:22pm UTC](https://forum.catholictalk.net/t/how-do-we-recognize-a-heretic/4254 "2026-09-29T21:22:43Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![immutable\_catholic](https://avatars.discourse-cdn.com/v4/letter/i/9e8a1a/32.png) [@immutable\_catholic](https://forum.catholictalk.net/u/immutable_catholic)\
**Post date:** [September 29, 2026, 9:22pm UTC](https://forum.catholictalk.net/t/how-do-we-recognize-a-heretic/4254/1 "2026-09-29T21:22:44Z")

</div>

A person claiming to be Catholic but holds things that are alien to the faith, when they manifest their heresy in public, by that fact alone, they are outside the Catholic Church; without any formal declaration.