I think it is fairly obvious what THE necessary entity is necessary for. And it has been stated in the context of the universe and reality. To pretend you are in the dark on that is pretty disingenuous IMHO.
I never said I was in the dark - I said it was meaningless to describe anything as a necessary entity, let alone the necessary entity unless you also state what it is a necessary entity for. There is a difference.
But nonetheless in the current thread we've discussed necessary entities for:
The universe (brought up by you)
A bicycle (brought up by you)
Neurotransmission (brought up be me), and most recently
Children (brought up by you)
The broader point is that the necessary entity or entities for each are different and therefore the context of the discussion is important particularly when you are clearly trying to guide the discussion towards a purported THE necessary entity - implying a universality, with a objective in trying to imply this to be god.
But we can see through your wheeze - and of course there is no such things as THE necessary entity, because as I have pointed out this is entirely context specific. So there are only context specific necessary entities and there may be more than one of these for any given context (children being a very obvious example).