God is not created. He does not have a body. Bodies are put together or composed, and God is neither put together nor composed of anything. He is the Creator, not the created. Until God created, there was nothing. Only God is eternal. Only God is uncreated. There is no eternal matter or “spiritual substance” that co-existed with God. That would mean that God did notcreate everything, and such a God is not the God of the Bible. Such a God is a limited God, a less-than-supreme God, a God who needs something beside himself to act as God.
One other important point. God is personal — and he relates to us in a personal way. We should never think of God as so transcendent that we cannot relate to him in a personal way. That, again, is precisely why he reveals himself to us in the Bible in human terms, in terms we can understand. That is why the Son of God became human to reconcile us to God. God wants a close and personal relationship with us. He wants fellowship with us. That is the reason he made us, and he has made it possible (despite our sin) through our mediator, the God-made-human Jesus Christ.