@OmSigDAVID,
OM,
We do not ignore the concept of "oneness" in the universe as you describe it. We simply vehemently reject it. This concept is in direct contradiction of the Bible and what it teaches. Let me explain.
We believe that God is a supreme being and is the creator of all things. We believe that the only way we can know about this God is through His decision to reveal Himself to us. We believe that God has revealed Himself to us through His inspiration of the Bible. God has no beginning and no end. The oneness concept contradicts what God has revealed to us about Himself. We are not all God, The trees and grass and the birds and animals are not God. To believe this "oneness" concept one must accept that all living things are one, thus that the individual differences are eliminated. No one individual living thing is greater than another and therefore all are equal. We know this is not true, and to accept it as true would make eating vegetables vegicide. Basically all herbivores and carnivores would be violating this oneness principle and not bowing to the oneness of all things. There is just so much more wrong with this concept I dont think I can address it all.
Let's just stick with what the Bible teaches us. It teaches:
There is a Supreme Eternal Creator
Humans are the only living form created in the image of that creator.
Humans were given dominion over all of the creation.
God is a being who stands in judgement of His creation.
We as part of His creations are accountable to Him.
All we can know about God is what he chooses to reveal of Himself to us.
God has revealed Himself to us as Holy and Perfect.
We as His creation have separated ourselved from Him though disobedience.
WE can be reconciled to our Creator through only One Way.
We must confess our sin and accept the Sacrifice of Gods Son (God Himself) as a propitiation of our sin.
We must turn back to Him and allow Him to be the Lord and Focus of our life.
So this is why we reject the concept of the oneness of the universe.