>>18253562You're really asking for a repetition but let's go with it anyway.
If it always existed, it has an infinite past where all potential of random chance or function had been maxed out.
Implying the universe should happen (by random chance or by function) before it happened. But it's impossible for an event to take place before it took place.
This impossibility can be avoided if the universe happened by choice, which is the only other possibility.
That's how God is a possibility, where the contrary, no God, is impossible.