How Do Theists Know That God Communicates With Them?

Recently I had a discussion with a religious friend and asked him what I consider to be a key defining question. I've tried to record the dialog here as accurately as I can, but obviously the following is not a transcript. During the course of the conversation the "relationship" topic came up.  Knowing that communication is an important part of a relationship I asked him "Does God talk to you?".

Does God talk to you?
He said "Yes".
I said "When?".
He said "Right now."
I said "Well, what's he saying?"
And he said "He wants you to know he loves you and he wants you to come back..." yada, yada, yada.

So I said "Harvey, my six foot rabbit friend standing here next to me says he doesn't believe you".
He laughed. So then I said "God, did you really say that?". Of course there was no answer.  Then I said to my friend, "That is exactly what I would expect to happen if he wasn't really there. You don't believe in Harvey, and if you ask him a question, he won't answer.  Either he's ignoring you, or he's not really there. You decide. But seriously though, how do you know the difference between the thoughts that normally occur to you and the ones that you think come from God?".
He said he didn't know, but he could tell the difference. 

What is the difference?
I told him that I thought he was just making stuff up, and that he didn't really know what was auto-generated by his brain and what came from God.  My point was that if there is no demarcation, no point of delineation then it should all be assumed to be auto-generated.  The reason why, and to draw a loose analogy, is that until a schizophrenic learns what schizophrenia is, they are quite certain they are interacting with voices and persons that are auto-generated by their brain.  And to a lesser degree, I know people that hear things that aren't there, I know I do, and I know that when I was in a band, under certain conditions I could hear a bass line that I would "copy" and use in our original songs. 

No one could hear the notes but me. That wasn't supernatural, I am sensitive to frequencies in a way that others aren't and I am quite sure that a spectrum analyzer would be able to detect them. Now that I'm older, when I'm in a noisy industrial environment, I can hear "beats", "partial melodies", "phones ringing", "voices", you name it. If it kicks off that portion of my brain that recognizes a sound, whether its the real sound or not, I hear it.

The Difference is Easy to See in Most Other Cases. It Can be Cross-checked.
This problem of differentiating between what is auto-generated and what is perceived is easy in all other cases.  When I communicate with people, I see it, or hear it.  It comes in through my eyes, ears etc. I know how I perceived it. The source of the information is known, and it is usually of a sort that is generally independently verifiable. It can be cross checked.  I don't have to resort to special pleading to get someone to believe that I have perceived the communication.  If I tell you that my friend told me something in the course of our dialog and if you knew who it was, you could ask him.  When I told my band mates that I heard the notes, then immediately played them, the possibility that hearing the notes might be supernatural never occurred to them.  We all understood feedback, resonance and harmonics so that was adequate to explain the way I could come up with the perfect bass line after listening to the song for a minute.  If it was from some spirit, let them take the bass out of my hands and show me like any other person would. A spirit appearing before my eyes and giving me a bass lesson would be incontrovertible evidence to me.

Not So With Gods.  
As I pointed out to my friend, if I ask God if he really said that to my friend, I don't get an answer, and other religious people are just as certain as he is that they have a relationship with their Gods, and when I ask those Gods to talk to me, they don't either. 

Special Pleading and Disconfirmation Bias
If God exists, and he talks to my friend, then my friend should be just as willing to accept that any other God exists, or that Harvey exists on the same grounds.  If not, then he's committing the fallacy of special pleading to support what he already believes and ignoring disconfirming evidence aka Disonfirmation Bias.

Brief Introduction To The Vedas

[Revised 20091103] This is the first article in a series of Brief Introductions to Hindu Scriptures. As with other ancient religious texts, these are generally considered to be divinely revealed. Divinely revealed information has all the problems identified by Information and Data Quality Dimensions, the most obvious are the Intrinsic dimensions of Accuracy, Believability, Objectivity and Reputation.  Hinduism is the oldest religion and the Vedas are its foundation.

I recommend browsing the articles embedded links and resources at the end for a better understanding of the material.

The Vedas are a collection of texts written in Sanskrit from the Indo-European language family of which most Western Languages are a member of.  The Vedas represent the earliest set of Hindu Scripture and are considered to be divinely revealed.  Their earliest origin so far has been traced back to the people that occupied the steppes of Central Asia. Those people are referred to as Aryans or Indo-Aryans.

Aryans migrated into the Indus Valley (modern Pakistan) in South Asia from the steppes of Central Asia in the second millennium BCE, bringing with them the Veda, an oral tradition of knowledge primarily concerned with ritual.  The Veda is thought to have existed as oral tradition from 2300 BCE to 1200 BCe before it was finally written down. The Aryan culture intermingled with the culture of the Indus valley to produce the Hindu tradition, and the Veda became Hinduisms most sacred authority.

The Veda is not structured using any organizational scheme a modern person would recognize and do not present any ordered theology.  The texts, at times, are inconsistent with each other.  However, the Veda is organized into four volumes called Samhitas, and each is concerned with a particular aspect or ritual.

•  The Rigveda (description; text online) is the oldest and most important. It contains over a thousand hymns of praise to Gods and Goddesses called Mantras and they are used in rituals. It discusses the Cosmic Order or Holy Law called Rita. A similar concept to Rita is the Greek concept of Logos, which appeared sometime between 500 - 400 BCE and which appears in the Gospel of John between 100 and 200 CE incarnated as Jesus. The English words Rite, Ritual, and Right are all derived from the same root as Rita.  Rita is concerned with order, harmony and morality. The Rigveda Hymn Of Creation (one of many cosmogonies it contains) has similar elements to Genesis.
  
•  Yajurveda gives instructions for sacrifices
•  Samaveda contains melodies, the songs had to be just right to be effective. The concept of sound, language and spoken word was very important to Hindus.  In the later Hindu Scriptures known as the Upanishads, Hindu cosmogeny has the sound of the Universe being created as AUM, and AUM is also regarded by some as being one of the names of God as well as a symbol for God. This importance of sound and word is similar to the universe being spoken into existence in the book of Genesis.
• Atharvaveda contains spells and incantations for healing rituals 

The Vedas were maintained and studied by the Brahmins (Priestly class) and were intended to be hidden from the rest of the population because their information was considered to be dangerous if not handled properly.

As mentioned above, the Vedas contain many conflicting cosmogonies, but generally the Veda says that reality is composed of three parts and was created by "That One" who ordained Rita. It says that 33 additional Gods or Devas were created that inhabit those parts and that they are not omniscient or omnipotent and that they are subject to Rita. The full pantheon of Gods expanded to the thousands. Hinduism is known as a "Henotheistic" religion which permits the worship of one God and the recognition of others.

The most referenced God in the Vedas is Indra. Indra was a God of Battle that brought success in War, similar to the Hebrew concept of Yahweh in the first five books of the Bible known as the Torah or Pentateuch. One of his other duties was as a God of Weather, similar to the Hittite God of Asia Minor in the Second Millenium BCE, and Marduke of Mesopotamia.  Indra slayed a Dragon of the waters, similar to Mardukes victory over Tiamat and similar to what Yahweh says about himself in the Book of Job. Leviathan, the Dragon of the waters, also makes an appearance in Psalms and Isaiah.

The second most referenced God is Agni. He was a God of Fire. This kind of fire worship has a parallel in Zoroastrianism, with burning as a symbol of purity, and in the Old Testament practice of burnt offerings.

Another Deva, Rudra, was known as "The Howler", he had no friends, he lived in the wild and was responsible for giving diseases to humans and healing them. He dressed in animal skins and had matted hair, an image similar to the biblical description of John the Baptist.  Rudra is believed to be a prototype of the God Shiva. 

Resources 
A Short History of Religious and Philosophic Thought in India by Swami Krishnananda

IDQ Dimension Category of Intrinsic Labels

Intrinsic IQ:
Accuracy, Objectivity, Believability, Reputation

[Other Categories]
Contextual IQ:
Relevancy, Value-added, Timeliness, Completeness, Amount of Information

Representational IQ:
Interpretability, Understandability, Concise Representation, Consistent Representation

Accessibility IQ:
Access, Security