Sacredness is not a relationship with belief. This is a categorical error. Beliefs are simply ideas we like to think on then entertain out of preference—then wrongly cling to out of credulous insecurity. Belief is needed because it is not real. Quantum Theory is the closest thing to real that the general population has been exposed to. It demonstrates what is unseen by the senses—this is god.
Highly charged emotional states or chemically enhanced experience may at times give one a glimpse into the hidden portions of reality. This is no more spiritual than your normal existence—it is only different. Calling it a deity is supposing that anything outside our normal perceptions is god, when in reality the process of evolution has not seen fit to expose more than the needed perceptions to eat and reproduce.
That the ground of being is some kind of entity is a fundamental mistake. There may be something underneath it all but it is not a being, it IS being. It is the way things grow or become—no-thing knows how it is done or that it is doing it. Like how you grow your hair or raise your hand. You just do it never knowing how. This is god, if there is such a thing, which I just explained is not a thing.
The idea that god is a being is a projection from our individual aspects of form, which is not too far off the truth. Not as individuals but as apertures of the whole. Every bit is meaningful to us because every bit is the one thing.
Driving with the top down at the speed of life can get a little messy. Getting a glimpse now and the can be rewarding but not meaningful—it doesn’t do anything and is at odds with evolutionary fitness. Plus there is actual thrill in not knowing—this is what makes the Great Mystery meaningful. What point would actually be meaningful if there was no mystery?
If there are entities that know more than we, this is god until we realize they only have different evolutionary hacks and perceptions, a different peep hole into the objective reality that we see vey little of. To see 10% more may very well overload the circuitry and distract evolutionary fitness as we know it.
What we don’t see may or may not be more advanced or better, but simply outside our sensory perceptions and immiscible. We would be as much a mystery to them as they are to us—unless they have evolved to see things they cannot interact with, like watching tv.