What this means for you from an OOC standpoint is that you can actively make up scripture rather than only relying on a small body of curated scripture. As long as you do not claim that *all* sani followers believe the text is sacred, you are on pretty solid ground.
When I was doing this 10 years ago and not now we had the likes of Verjigorm and Revan doing just that. I do have a mind and throwing something together myself which may show up on Eve Fiction.
And in conversation with Cass and Silas showed that there is desparate gulf between each of their philosophies.
The issue at this point. At least from the RP perspective is to make the Sani Sabik more or less believable beyond the dog and pony show on the Forum and IGS. More than just the villain as defined by the Amarr narrative that has been going for a long time. That's the real challenge for any Sani Sabik player.
I would guess that a good way to think about this is starting from blood raiders and what they do.then look at what the Amarr believe of the Sani and kind of in the middle, and with your personal touches, create some lore.
I think that in this way you can be certain to be within the parameters of lore while also making stuff that also make you happy. The key thing to remember is that you are playing a villain ultimately a villain who lacks 'meat'though and this proves exciting stuff ahead to be created. , regardless how sophisticated and well versed might be, Sani Sabik are not also the antithesis of the Amarr structure and opposition to the Empire status quo, but also an opposition to any status quo ... I only say this because I see some playing Sani like liberal holders but with somewhat different scriptures. Evidently with you this isn't the case I am sure. . there are interesting things to do with the Sani I believe...
I hope I can help in any way. Feel free to ask if you want me to keep on suggesting, or even convo me if you like