You are not to pass judgments on others beliefs or lack there of, any more than they are allowed to pass judgement on yours. You are free to talk about how your spirituality affects your life, but you cannot proselytize or attempt to convert others.
Post in this or any of the sub forums under The Spirituality Forum must be linked in some way with the transgender condition, but may not also not claim it is a Sin, mental illness, or Wrong in any way. If you want to express those beliefs then by all means take it to another forum.