All things are quantum probability waves until an observer collapses them – so teaches physics. If there is no observer the universe is just all the possible states, all at once. So before there were people, who or what was observing the universe for it to have a definite state? How can there be any definite history of the universe between the big bang and the appearance of observers? Any definite history sufficient for instance to have definite solid planets, functioning stars and emerging evolving biology so as to give rise to the observers.
Physics requires a priori, an observer, to be anything other than an infinite mush of all possibilities.
So what constitutes an “observer” anyway? A plankton? A bacterium? A monkey? Whatever, no observer could have been around early enough to make the universe probability wave collapse into something that could give rise to that observer – it’s a paradox.
The answer is, of course, God. Oh how predictable those Christians are eh?
Now while you digest that, ponder this:
If a load of heavy stuff in a tiny place makes a black hole from which nothing can escape, how come the expanding big bang, which was ALL the heavy stuff there ever will be and all in a teeny weeny tiny place (to start with) didn’t disappear up its own bottom?
The answer is of course it was expanding fast enough to escape its gravity as it expanded faster than light and there wasn’t yet any space to curve into a hole as it was space itself expanding as it went. It wasn’t going backwards in time despite the expansion going faster than light as the time-space was expanding with the light, so the light was not travelling through space and time, it was travelling with space-time.
All this required an observer to actually be rather than potentially be. The only possible candidate is, as previously noted, God.