I can only describe it in the way I understand it and this is yielded from the Holy Bible.
It is the part of us that, though invisible, is a product of the spiritual nature of the universe. I would go as far as to say that every expression is fired by our nervous/spiritual nature and so...as hysterical behaviour proves...we can waste it wildly.
Our inner nervous/spiritual nature must come from somewhere. Some is delivered by chemical interactions but Jesus, who speaks on behalf of Almighty God, tells us that we can earn it by righteous good behaviour.
If we say that it is part of the nervous/electric behaviour of the replicating living cell then we can see that it is a spiritual representation of our own being and...it seems...if we talk to Jesus Christ's word...it can be the force behind resurrection, behind everlasting life...and the force behind genetic repair in this life. We just have to believe those who love us.
Time for this again................
To me, "God" or indeed, gods, are religious concepts used to try and explain or account for imagined qualities and substances that cannot be identified in our world any more than leprechauns.
I see it as a category where the whole idea of the supernatural belongs.
Contrast that with the natural, which I see as covering everything that exists, including what we have yet to discover.
The term "supernatural" gives people a green light to not only make up whatever beings they want but also to endow these beings with self-contradictory and magical abilities. I see it all the time with believers when they refer to their particular choice of deity as being uncreated and somehow living outside of and unaffected by the passage of time. Yet their god still thinks and acts inside and outside of our natural realm.
It's funny but it's often the case that once believers have given their construct a free pass by placing it in the envisioned supernatural realm, they then become quite rigorous about what must be true in the natural world - the only world we know.
From a point of reason, the whole thing comes over to me as a logical nightmare, excused by the one word - "supernatural". It's a fallacy of special pleading whereby whatever the believer places in this supernatural realm gets excused from the scepticism and scrutiny.