UK: dieu(the motto on passport - French)/deity(English word)
China: tien(Chinese Wade-Giles... t->d)
South Africa: modimo(o->əʊ)
New Zealand: atua(Maori... t->d)
North America: tirawa(Pawnee... w->u t->d)
South America: tatitu(Aymara... t->d)
Basically, given that there are 7,000 or so known languages, then it is always possible to select some approximate meaning like "god; cow; eat; big" and pick words from those 7,000 languages that are sufficiently similar in meaning and form that you could assume some deeper significance to that coincidence. As a starter, to establish significance, you would need to show that these forms that you offer are actually the words for "god" in those languages. As a case in point, there is no language "South African". That word (Setswana) means "Man-eater", which is an expression used to refer to "God", and derives from the verb 'eat' which is /li/. If your criteria for "similarity" are loose enough, you can always find a "similarity" in a half-dozen languages. I would not be surprised if readers here could identify a half-dozen tangential similarities in the form of the word for "cow" across human languages.