Two grave questions, perhaps the most serious in human history, hide behind the topic assigned to me. First , what is “God”? and second, what is the relevance of this question to secular man? Having made the mistake of agreeing to grapple with this daunting challenge, I shall try nonetheless:-
“God” is an adjective, a very broad definition. Encompassed in those who believe  may be simple folk whose faith conjures up mythological images, such as that of “six seraphim stand above him, to each six wings, two cover their hands, two- their legs, and with two they fly”. For others, “God” includes all understood as well as   yet uncomprehended forces that exist somewhere beyond the grasp of homo sapiens. One may understand “God” in terms of the laws of nature and physics. Another may think of him as the force that bends Uri Geller’s teaspoons, while a third may ascribe to him the  power to control the rolling balls of the gambler.”God “ has many faces.
I do not think there is much difference between the idea of “God” as held by religious or secular people. The main difference lies in how I, as a human,  a created being, see my duty in relation to the Creator. One  person may be indifferent to the existence of God, another may deny it, while a third will take upon himself obligations and precepts deriving from his perception of  position as a human being relative to his Creator.
I think that if I were secular, I would know where to look for God:  He lies beyond knowledge, beyond the limits of  sensory perceptions of touch, sight, smell, taste and hearing. Anything I can sense I can know, and so science is based on knowledge and understanding. Faith in God starts where knowledge ends.
Belief in God is the nearest we can come to understanding Him and defining His relevance to our lives. But there lies the rub: where knowledge ends, doubt too begins. For whatever is unknown and remains unproved belongs to the realm of “perhaps not”...therefore, the more we proceed along the way of faith, we must accept as self-evident that we proceed also on the way of doubt, to the very peak. There, above, where the two paths meet, I must decide- a difficult decision-that either God exists or not,that either I believe or not. Doubt and knowledge start at the same place, both aspire to the same peak. Only I as  a lone believer can make that decision:  is there a God or not, or at least, do I have God within me or not?
Now, if there is a  God or not, what relevance does it have for a person who does not keep religious precepts? Is the performance of the 613 Jewish commandments the only expression of faith?
Not at all! One of the reasons is that the  Jewish “rule-book,” in its narrowest interpretation, does not include any precepts regarding things that man does, that are good deeds, but  are not infused with religious or traditional meaning.
God may monopolise man but man does not have a monopoly on  God .   So I can obey the precepts of God , but I cannot accept the political pronouncements of rabbis and politicians who distort the will of God, when I know that their knowledge of God is as limited as my own.