To be fair I do not like usual blatant parallels to catholism/islam/whateverIRL not because it can hurt the feelings of RL believers, but for other reasons.
It's not only towards the other Amarr RPers that's it's rude, but towards other RPers. It puts them into a delicate position where the boundary between RL and Eve starts to vanish heavily, where they will start to see the Amarr Church as the Catholic Church or the Islamic Religion (or whatever), and it will add a good deal of strain on their own RP when they will have to deal with it. More specifically, we have already faced a crapload of OOC/IC bleedovers coming from various players unable to make the difference between the Amarr religion and RL religions, against which they are already crusading IRL. Eventually it may be their fault to make that OOC/IC bleedovers, but by equating the Amarr religion to RL religions one makes their claims legitimate in some way and we eventually end up in an OOC war between atheists and believers instead of an IC war between two New Eden cultures. Eventually it's all the other Amarr RPers that have to deal with that, and it's not very fun. I have been rather disgusted over the years to see debates slipping into that OOC imbroglio, especially since that I try to play an (unusual, granted) believer when i'm a staunch atheist IRL. Imagine how I feel when I see other RL atheists being dicks with my character ICly for veiled but blatant OOC reasons. It's a damn mess.
I can understand that a lot of people have their own interpretations of PF, and that's what I like with Odelya (the Saudi prince analogy is rather good), but be cautious not to overdo it. It can be fun to take RL concepts and draw analogies to create something new ICly, but directly making copycats tends to make people cringe, especially since the scriptures do not point to so many similarities between RL religions and the Amarr religion. In the form, sure, but for the content ? Maybe some similarities with the old testament, but that's it. I'm not even sure that there is a clear mention of "God" in the few scriptures quotes we have (only on the more general PF). The only clear reference I have in mind is "The/Our Lord", which is rather different. There is no "at the beginning, God created..." but "The Lord bestowed upon us...". That is, one among many examples.