If that's what it is while not being a supreme being who knows everything and can do anything, then I have no conflicts with what you're saying. However, if that's true, there are many Christians who would disagree.
(most)
God is an energizing Spirit. In the old testament the holy place was hidden from the people by a veil. Death would occur if the lid of the arc was dislodged.
Exo 25:8 And let them make me a sanctuary; that I may dwell among them.
Exo 25:16 And thou shalt put into the ark the testimony which I shall give thee.
The significance of this is not understood until an individual person presents his body as a living sacrifice by purifying his self. The way into the Holy place in now shown.
God will indwell powerfully. The body becomes a kind of ark. Rather than dying physically a person kills off the old self inwardly and is allowed free entry. It is grace which means favor. Christians teach that Jesus has already done this and there is no other sacrifice to make. But His sacrifice allows others to enter. This is the Holy Grail and is powerful. Christ is anointed, each must acquire this and to deny this is anti-Christ.
There is a much deeper experience that modern Christianity denies, this is the reason there are so many types.
Rev 12:11 And they overcame him (Satan) by the blood of the Lamb, and by the word of their testimony; and they loved not their lives unto the death.
Rather than be in the ark of the covenant God now indwells and the testimony is within a person. This is not superficial.
This mind holds the key to immortality. But the natural mind does not measure up and is deficient. The natural mind is regarded as rebellious and this means everyone is bonded in the mind. There are subconscious connections made with others that involve the memory and how different feelings for each other are developed. Each individual learns to be empowered in own self belief. The penalty of own power is the unusual thoughts that enter the mind that some act on through temptation and prompting. This power is also seen in the voice when it attempts to affect the emotions of others.
What does this have to do with whether or not an all-knowing, all-powerful supreme being exists?
It doesn't but this is the barrier to knowing God. It is perpetuated from within, generation to generation. Satan is the influences in the self and demons are mind sets that prompt and tempt within the thoughts to act out.
When you say "God", are you talking about a supreme being that can do anything and knows everything?
Neh 9:6 Thou, even thou, art LORD alone; thou hast made heaven, the heaven of heavens, with all their host, the earth, and all things that are therein, the seas, and all that is therein, and thou preservest them all; and the host of heaven worshippeth thee.
Everything that is seen is made to appear at every instant.