The word, concept, can be used anywhere, and everywhere, be in sciences, in arts, in design departments, in corporate boardrooms, in classrooms, and yes, even in religions, where ideas are formulated, communicated, presented. In another word, concepts are often shared.
The concept does not make it inherently “true” or “false”. They are just ideas that started with something thinking about the ideas, will then either write them down or present the concept orally, for others to consider the concepts, eg evaluate it, implement it, or discard it.
A concept doesn’t have to be science-related or religion-related. As I said in the opening sentence or paragraph, concepts could be on any subjects, unrelated to science & religion.
Concepts are not “true” by-default. It has the potential of being true, but as humans can make mistakes, or be illogical or unrealistic, concepts can also be shown to be wrong, when evaluated, analyzed or investigated.
An actual “scientific theory” begin with developing a hypothesis, that’s neither true, nor false, but must be testable and eventually tested, if a hypothesis is to ever be considered scientific. A hypothesis is only true, when it has been rigorously tested, and the evidence, experiments & data are accepted by independent scientists as a new ”scientific theory”.
In another word, no hypotheses are accepted as true without being rigorously tested & verified.
But at the very beginning of Scientific Method, before even starting the hypothesis in the first place, it should always start with some preliminary observations to some specific phenomena, following by having “ideas” or “concepts” that are questions about the “observations” that a scientist is curious about.
These questions are often about -
(A) WHAT the phenomena are?
(B) HOW do they (A) work?
(C) WHAT could to use the information (from earlier questions, A & B)?
(D) HOW would you implement C?
Note that questions A & B is all about understanding the observed phenomena, understanding the properties of the phenomea & its mechanisms.
While C & D are all about exploring the possible or potential applications they may have.
So all of that will involved some preliminary research, to learn if these conceptual ideas are falsifiable, and whether it should start developing the actual hypothesis.
In the scientific method diagram below (copy from Wikipedia), what I was talking about the ”observations”, “questions” & “research”, they are all starting point, prior to formulating the hypothesis (the hypothesis is a "proposed" detailed models of explanations & predictions, including instructions on how one would test the hypothesis, eg how to perform the experiment(s), or where to look for evidence, etc):
So science, concepts are involved in science too, but the big differences between following the processes or steps of Scientific Method, and all non-scientific concepts (including religions), the models in a hypothesis, have to be tested, to verify and validate if the hypothesis is true, or to refute the hypothesis.
How would you test your claims about the pantheistic "deity"? You don't.
While it is great that you can meditate and believe what you believe, meditations are great for retrospection, reflection and expanding one's "spiritual" consciousness, but what you tell us about your experiences, is nothing more than hearsay. It is only relevant to you, and no one else, hence highly subjective and personal.
It doesn't tell what you've claimed, to be true - something that I can observe, touch. If anything, all you have to say, is not only unrealistic, your claims also sound illogical.