Does God tell us stuff threw dreams?

The Bible (and probably most religions) have much of their basis weird dreams. Everyone has weird dreams and no, it isn't the cause of a deity. It is a product of our mind processing the awake world.

Answer:

"For God speaketh once, yea twice, yet man perceiveth it not. In a dream, in a vision of the night, when deep sleep falleth upon men, in slumberings upon the bed; then He openeth the ears of men, and sealeth their instruction..." (Job 33:14-16).