Threads that present doctrine, news, Scripture, etc. are a "town square" - challenges are allowed and must be addressed on thread.
Challenges may be robust, even hostile, but only towards the doctrine - never to the other poster. Such personal attacks will be removed.
We do follow the threads and sidebars to intervene before tempers flare. But the wise posters will remember that passers-by judge each posters theology as much by his conduct as by his words.