God certainly can talk to us through dreams, but so can our oppressor, as well as our own fertile imaginations - which express our inner desires and nature.
If the dream is about something I really want (apart from God), then I discount it.
If the dream is about something overly self centered or evil, then I discount it.
Does it involve a message for someone else, then I discount it.
If the dream is about something I would not have thought of in and of myself:
- Is it Biblical without hedging?
- Is it Biblical, discounting my understanding of the dream?
- Could God be saying something but I might be misinterpreting?
- Could God be saying something but I might be placing emphasis in the wrong place?
- Is it ministry related?
- In truth where is my standing with God at this exact moment?
- Picking the most conservative friend, what is their opinion?
So, a fairly limiting list I put against my dreams. Why? Because I have friends whom are almost superstitious concerning dreams and I have seen them chase after some real disasters, believing they are doing what God told them to do.
Even if you believe you are cool with God, He may well not be with you or our life. I have a friend right now so whacked in their lifestyle that I can't see that they know my God at this moment in time and they are chasing a dream - which is really their will and not of God at all. Can't tell them anything but when the train wreck comes, I hope to hold their hand and point out what went wrong. Because they are going to be blaming God, again - and He is innocent of this one anyway.....