I share to a certain extent your skepticism towards the good book and religion as a whole. I don't think your letter j argument holds any water though. The first uses of the letter j were as i's to make them more legible in handwritten words. And it took time until scribes started using it as a separate letter. The sounds they meant to connote already existed. Julius Caesar was just Iulius Caesar. I agree with you that religion can be used as a tool to control the masses. Just don't make any logical leaps based on English spelling in particular, which makes no fucking sense to begin with.