Where did God go? "Who" is asking the question? This is not meant to be a facetious question, but rather to be a prompt to you to honestly investigate and find out. In the examination of "what" one is in actuality, one is faced with challenging one's long-held beliefs about what "God" is. Perhaps "God" is present with you now, but he is not being seen because 'beliefs' are clouding your vision.
Without reverting to beliefs of any kind, what is here now and always? What is it that lets you know that you exist, feels the emotions, notices all thought, and looks out of your eyes without labeling or judging anything? What is the stillness that sits at the core of your being and watches all else dance in celebration; what is the silence within that embraces all the noisy activity around you; what is it that touches everything with a feather of "knowingness" before the mind comes in and twists things to its own end?
When you notice/realize what "this" is, then look in the mirror - the mirror on the wall as well as what is showing up on the mirror of awareness which is streaming out of your eyes at this very moment. Then "God" will take on a new meaning which cannot be put into words. This 'knowledge' of God will arise out of your direct experience rather than come to you in some second hand fashion, and which has morphed into beliefs to be argued and fought over.