In the ancient text, the power of the Faith is a fact. Of course it isn’t obvious for someone who isn’t a believer but it remains a fact and it’s possible to construct on this. Those texts are clear because they come from the source. So if you seek the Truth,  you have to read them, to study them but as if it’s a bridge because it’s only a way to go further on the other side. The book is a path of light and a way to go to the essence. But some books are essential because they have essence even in their pages.