Ok...you want to focus specifically on what cultures call their sacred writing.

I think in their particular culture the writings were edifying to them.

I think the problem arises when the scripts are focused upon another culture and presented as their truth, and the truth for the rest of the world.

In this case, the "sacred text" are downpressive to the people it is imposed upon.

Nothing forced upon another people against their will is edifying to them initially, be it writing, or ideas.

Thru the passive of time, when generations die off, the once imposed text become accepted and acculturated.

That is why it is important to keep a remnant of a people's original ways.

What is the best way to do that other than the written word?

Things carved in stone, or etched on papyrus last far longer than the voice of the griot.

Peace