Once we are sufficiently humble, I think we will admit that we cannot make an assertion of that type. It requires a knowledge and a certainty that is outside our purview.
But if there is a god and she puts herself beyond our capacity to confirm her existence, I for one believe it is appropriate to honour that wish by putting the question aside as plainly unanswerable.
Others choose worship. In my view, that represents presumption about a putative god's wishes. Would I wish to be worshipped by an ant? No, I would want it to do anty things. Above all, I would want it to embrace its antdom and to be curious about the ant world it inhabits. I would see its appreciation of its ant world as a worthwhile reflection upon me, its maker.
Even so, curious people perform god's work, in my view. They seek to understand and wonder at the book of nature. Historically-speaking, science and religion once were much the same thing. Unfortunately, in trying to fix its truths, religion eventually lost its purpose in understanding the world around us.