That gap is filled with history. Scripture is history to a certain extent. Also anthropology, which is quite distent from math, being much more akin to history. Psychology and similar so-called sciences are in the same fold.

My view is that most of what we know comes from this gap rather than either mathematics or god. Most of what we know amounts to what has happened that we know of. That is not mathematics, nor is it god. It's history in the broadest sense. It includes music and poetry, neither of which come from math, and although perhaps inspired by god, they are human creations. What really counts is the history of human creativity. That includes both math and god, and much more.