Also, "I created the vastness of reality, the complexity of existence, and all that has ever been, but I will only communicate via vague "signs" and schizophrenic humans."
The blasphemy was a bit in jest. However I'm scripture it's clear that he did communicate to humans, even taking a human form through his son/alter ego.
Yes communication is possible, just not directly, hence the signs and the symbols.
As for Jesus, even if he's God and a human at the same time, it doesn't mean that he would be able to speak divine truths directly. An infinite being as God cannot be rendered in a finite language.
An all powerful sky wizard can do whatever he wants. Imaginary Sky Daddy can be rendered in whatever way he see fits without people like you "defining" how he does and doesn't work.
It's all just goofy conjecture anyways used to control people. "Murder in the name of" and all that insanity.
Ah right, that LN/Manga something something power of instant death (was an anime last season) has heavy fokus on this, since the gods there are only gods if they see themselves as omnipotent.
You create a whole universe and stick humans in a tiny portion of a tiny galaxy, of a tiny star system, in a tiny part of the planet, in a tiny set of environmental conditions able to observe a tiny percentage of the electromagnetic radiation for a tiny amount of time able to manipulate objects in a tiny percentage of physical scale and are born to have 0 knowledge of God unless some other human tells you about it, and you better hope you believe the right one or you are sent to eternal torment?
"But it makes sense because your mind would melt" wtf?
Give us a universal language and an innate ability to read it, and write your words on the surface of the moon, or even better we grow with the knowledge pre installed in our heads.