OK. So I can express my conviction that everyone who reads the Bible attentively will become Catholic but I cannot direct it to a particular poster? Because surely I should be free to express that general conviction.
I am blessed to have the Bible on my iPad. I read it every day and nothing I have read has ever hinted that I should be catholic. I still think that is one world religion junk. Why would anyone believe that? It may happen in my lifetime but catholics believe stuff that is not Biblical.
You can express it in a general manner as an opinion.
Stating such an opinion as if it is a fact to a poster that it will happen to him/her is making it mindreading, which makes it personal.