Yes, we can discuss necessary existence in this forum for creation and evolution within physical science, what we won't discuss is why believe passages of the Bible, or any religious texts, for it. This is a matter of faith, it is certainly alright to have it, but it is not for discussing here. Why update the term necessary existence? I didn't understand the reasoning for that, I do understand the term already. If you or others don't, I did not mean for any to be left in the dark, and I will explain it further hoping to do so better. I hope to understand you more clearly. You want to discuss what necessary existence is, but not have any discussion of a supreme being because that depends on a text? Is that it? Because though it is my faith that there is the supreme being that is not based on text. I already have faith there is the supreme being before consideration of any text.
I can try for others. I see it. We cannot really have anything from nothing before, even though some say math does not apply. A field that produces anything is still something, not nothing. But what is necessary existence, by the definition of its necessarily existing, cannot not exist anywhere, there must be the existence, and arbitrary limits are excluded, by the logic of the definition. This describes nothing found in the universe, though many can see the design to the universe.
I say it's a being, not that it has to be included in consideration of necessary existence that is not the universe, but that I myself find it fits best. I explain it as well as I can. It could be some keep up a barrier to seeing this.
This is just based on a field that can generate things. But that is not nothing, either. And it is not uninterrupted limitless necessary existence, itself, as you give consideration to quantum existence for things generated, and would depend on some other, whether you call it being or thing.