Who said anything about mortals?
What does it mean to "know" everything? Doesn't that assume there is one universal explanation of things?
In a manner of speaking there is just one universal explanation of things, but it's not the 'answer' or the 'question'. It's the one who poses the question and observes the answer, that is the fundamental key to it all.
I'm not trying to be mysterious or obtuse here, but we're in an area where humanoid language begins to fail in trying to describe that which has no motion, no wavelength, no mass, and no location, yet which has the power to affect all life, form, energy, matter, space, etc.
Our bodies may be born of stardust, but not us. We came before.
We came before our bodies? You say it as if you know it for a fact. :) Or do you perhaps mean the very 'seed' upon which we would eventually emerge, something happening at the level of atoms and molecules?
Are you attempting to describe the so-called "life force"? That 'spark', or 'magic ingredient' that turns lifeless matter into living, breathing creatures.