True.
True.
True.
I'm not seeing that one. Even if God does exist, maybe he was created by another God or some sort of force or part of existence. Why does a being that has super-intelligence, and super power must exist and there is no way for reality to ever work without such a being? I could think up a possible universe where nothing exists, not even God, or a timeless multiverse exists instead of God. And that also means that means he can't snap himself out of existence, since he must exist now. God might exist but might not be a necessary God.
Or maybe he exists because he is timeless, he just happened to exist timelessly instead of something else, instead of must existing. This is related to the question of why there is something or not nothing or why the existence is one way instead of being another. Why did we have a timeless God instead of a timeless multiverse or nothing? If you can't come up with a reason why we got a timeless God instead of a timeless other thing, then you can't claim that God is necessary and must exist.
Another problem is that I don't see why God must existing is conditional on him existing. If anything its the other way around. God exists because he must exist. If God must exist, then him existing has nothing to do with it, and you can't say he must exist if he exists.
I'm going to assume for now the premise that if God exists, he must exist. God either exists or he doesn't exist. And in the last premise, he must exist if he exists. And if that works, then I guess he is a necessary being and must not exist if he doesn't exist.
But the last premise that I have a big problem with works much better if swapped in order with this one:
God must exist or God must not exist (establishing the God we are talking about is a necessary God).
Therefore if God exists, then he must exist.
This premise would be more about establishing the type of God we are talking about, a necessary God, rather than proving him. Then we can be sure that if a necessary God does exist, he must exist.
I'm not seeing that one either. Maybe a necessary God is actually impossible, and it is impossible for God to be necessary, because its impossible for a complex intelligence to be necessary, just like it is impossible for me to be necessary. Maybe all intelligences require a beginning and education. Or maybe we exist in a Godless universe where God isn't possible, or a God can be created but then isn't necessary and doesn't must exist.
The premises of this conclusion are deeply flawed, so this conclusions is deeply flawed. You can also stop here. If you have shown that God must exist, then you don't need to show he exists, because its pretty obvious.