I answered that He was invisible and meant to be that way, that the idea of God as an old man with a long white beard and a flowing robe sitting on a throne in the sky was over-simplifying Him. God was within each of us and all of us.
In subsequent years I turned to prayer and I was never looking within for God. I was the sufferer. God was the benevolent, forgiving (or angry, punishing) outsider. I was dark and dirty by nature of my humanity; God was squeaky clean, untouchable.
Today God is within, not as ego, not as punisher or rewarder, but simply as reminder. As long as you breathe and remember, use what you know, what you've learned, to give your all in every circumstance. That's what brings the joy in officiating wedding ceremonies. An excuse to know God through the instrument of human love, through the witnessing of lifelong commitment.
I don't know any more if I actually believe in God, but to whom does that matter? Certainly not God. I do believe in the power of surrendering ego (don't always welcome it) and moving over just that quarter inch for another to be able to have dignity, to laugh at the folly of it all (like believing in such things as perfection). That is the presence of God as being everywhere. No certainty, a little faith. No guarantee.