God has always been. He does not born and nor does he die. It is a common misconception that something always has to come into existence. That means something has to be born from nothing which does not see, logical. Everything in this Universe has always been in one shape or form. What makes our physical human body existed in another shape or form earlier: carbon, water (hydrogen and oxygen), and other things existed in another form. Our soul is a part of God Himself. Think of God as a collection of souls, a greater spirituality, the spirituality greater than all. Nothing is ever created or destroyed.