Not, not God, A-G, St. John (we think). Not even the Church says it's God, but According to John, not according to God.
To the contrary, the breath is not physical but spiritual
In your dreams. You must then believe that bats are birds, because "God" says so. What we breathe in and out of our lungs is not spirit, but gas. It has to do with oxygen exchange so that our cells may live.
You quote Genesis 2:7 and all it says that God gave Adam the first breath. The organism takes over form there because it was built to breathe. That's what happens with newborn babies.
Do you believe the earth is sitting on four pillars and earthquakes happen when God shakes them? You should. "God" says so.
If there is an entity called a spirit, an immaterial existence, then it will not be in a form of anything physical, including breath, but separate from it because its nature (essence) will be different.
And just as we know that dogs are not humans and humans are not dogs and can never mix because their natures are different, for only canines can have canine offspring and only humans can have human offspring, and only divine can beget divine, we then know that if there is a spirit that gives life to our body it is nothing physical, measurable, visible, spacial, or in any way quantifiable.
We believe there is, but we have no proof of it.
If I have told you earthly things, and ye believe not, how shall ye believe, if I tell you [of] heavenly things? – John 3:9-12
I agree. How do you know that what you believe are "heavenly" things when you have difficulty believing earthy ones?
God [is] a Spirit: and they that worship him must worship [him] in spirit and in truth. – John 4:24
How do you worship a Spirit in spirit? I would imagine it should be with spirit. Obviously St. John doesn't think we have can. Rather he uses it as "Love is worshiped in love,"Hope is worshiped or "in hope," or "Truth is worshiped in truth."
It's an unorthodox way of using adjectives, such as "lovingly," "hopefully," "truthfully," etc. So then we can say that we believe God is a Spirit and we worship Him spiritually, not carnally as the pagans do.
And he [was] clothed with a vesture dipped in blood: and his name is called The Word of God. – Revelation 19:13
In the beginning was the Word, and the Word was with God, and the Word was God. The same was in the beginning with God. All things were made by him; and without him was not any thing made that was made. In him was life; and the life was the light of men. – John 1:1-4
Jesus answered and said unto them, Ye do err, not knowing the scriptures, nor the power of God. – Matthew 22:29
But he answered and said, It is written, Man shall not live by bread alone, but by every word that proceedeth out of the mouth of God. - Matthew 4:4
But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know [them], because they are spiritually discerned. - I Corinthians 2:14
For the Jews require a sign, and the Greeks seek after wisdom: But we preach Christ crucified, unto the Jews a stumblingblock, and unto the Greeks foolishness; But unto them which are called, both Jews and Greeks, Christ the power of God, and the wisdom of God.
Because the foolishness of God is wiser than men; and the weakness of God is stronger than men. – I Corinthians 1:19-25
You really must be missing "something" if thats your spiritual experience.. I dont know that but it seems so..