Science doesn’t require a God of any kind to be complete.
Some people construe this to mean that they can keep God in one pocket and science in the other. But science is much more dangerous than that. In rationalising a space between the two, people implicitly accept Aristotle’s theory of the primum movens (or, unmoved mover). In other words, we can regress evolution, or cosmology or what have you back beyond the point of measurement, and beyond that resides the godhead. So Big Bang is okay, because God lit the fuse, as it were.
But the fly in the ointment is that you can actually push science past Big Bang and it still remains coherent (it’s not easily testable, but it’s theoretically coherent). Likewise, you can reverse engineer forces and causes of the evolutionary process past the origin of life. In other words, science doesn’t just end where God begins, and vice versa. No, science is complete – that is, it can conceive of the universe in its totality independently of any conception whatsoever of a Creator.
… Which doesn’t leave a lot of space for God, if you’re honest about it.
(And God, for his part, says, ‘I am that I am‘ and plagues me with boils. So, swings and roundabouts, I guess.)