That still doesn't change the fact ...
The truth you discover is open to interpretation. I often will describe it as the self existing. One constant sense of self, without a doubt, because nothing else is experienced in that moment.
In theory then this sense will never change and can only be hidden beneath. An unaware person can grasp the idea of self, without the awakening experience, without knowing for certain which sensation of the body to perceive as your true self.
That is the "first truth" I experienced, but the thought telling me, "this is you", even at the flat of the experience, and seeing the vessel, was interference from a disembodied voice.
My own logic told me it was the pure energy coming from the void, that my.thougyts were empty, and that reality is its destruction. The pains I went through and turmoil may have shaped me in some way, but this has all left me now, a decade later
This experience seems commonly, perhaps inevitably, accompanied by detachment from circumstances in your life that give grief, anger, envy, and so on. Dreams of all kinds, feelings of power and control, and the sense you are eternal, unbreakable. It can be heard as the call to our true nature, from the universe, God, humanity, or a spirit coming into you. It may be simply interpretted as somehing you know for certain to be true, such as you can only experience and grasp in unison, or a stone in the infinite ocean of reality to place your foundation.
The experience may be good in that you falsify your old assumptions, but you simply accrue more assumptions.
The one thing I know for certain is that I experienced it. Even while it becomes difficult to remember if I did, I believe the promise to myself, that it was real.