If you do not think God exist, you ARE rejecting God.
God,
No God,
Is that clear?
Nonsense, one would have to believe something exists before you can reject it.
For example, I can not reject Darth Vader, the concept is absolutely meaningless. What is there to reject? He's a character in a book, there is no physical entity or conscious being to reject.
It's my opinion that your god is simply just another character in another book. The same way you view Allah, or Zeus. Pure mythology.
To reject something means you believe it exists, you hear what it's all about, then decide to not follow, or actively oppose that thing.
For example, if the bible was correct, then Satan rejected God. In the real world, the American Founding Fathers rejected British Rule.
However, if for some reason everyone in the US at the time somehow forgot the King, or the United Kingdom existed, they would not have rejected the King's rule, they would simply not be aware of it. It would be impossible for them in that condition to either accept, or reject what he had to say.