there's already a division of whom or where the world really started and that belief has several answers that people can answer but to prove it lacks of evidence.
There's a huge amount of evidence for the big bang origin, and zero evidence for the 'God did it' origin.
Big bang is a scientific theory, and is supported by evidence. 'God' is a faith-based theory, and so - for those who believe it - doesn't need evidence.
One thing I find difficult to comprehend is the religious objection to big bang on the basis of 'Well, what happened before the big bang? You don't know that, you don't have evidence for that, therefore it's not true'. The problem with this argument is that it's someone who is happy for their own preferred origin to lack evidence, but simultaneously sees a lack of evidence for the alternative as being proof of its falsity.
As for what did happen before the big bang, whilst we don't know for certain, the fact that space and time are intertwined and can't, scientifically, be considered as separate things, does provide a clue. If we say that the big bang was the origin of
space, then it follows that it should also be the origin of
time... because it is the origin of
spacetime. But this is simply a theory; it's similar to black holes. Energies and densities hitting infinity is the mathematical limiting case, an asymptote that isn't reached; it doesn't necessarily mean an
actual infinity... but such extremes do present difficulties to understanding, as they are so far from our everyday human experiences. There are of course many theories as to how the initial conditions of the universe arose... it's just that they are very difficult, and perhaps impossible, to test. To understand a thing you need to view it from the outside. We can't view the universe from the outside.