Atheism worships a dead god.

[Edwardo Piet]

That's an ambiguous sentence, so I can't answer it. It could mean there are no atheists who deny the possibility of any deity's existence, or it could mean not all atheists deny the possibility of any deity's existence. You need to be explicit about which of these you mean.

Sorry. Yes you're quite right. I didn't mean to be ambiguous, I didn't realize the ambigiousness of that sentence.

I meant not all atheists deny the possibility of any deity's existence.

Atheists are those who do not believe in deities. So that applies whether they merely disbelieve or whether they go further than that and in addition deny the possibility.