I was careful to avoid the word "proof". That actually applies to mathematical concepts.
I am glad to hear that...
First you say you cannot demonstrate that the messenger gets any messages from god at all, and then you say the only way to know anything about your god is what the messenger tells you.
I cannot prove that Baha’u’llah got messages from God, but there is evidence that indicates that He did. The evidence is that He was being truthful is His character and everything He did in His life, including His 40 year mission.
Also, there were people who witnessed Baha’u’llah receiving His revelation (messages) and they observed Him recording His scriptures. This is written in the history of the Baha’i Faith. Was that proof to them? It certainly must have been something to witness, more than anything I am able to have, but at least I have what they wrote about it.
I agree that experiments cannot be performed to demonstrate the existence of your god because you have defined him in a way that makes him unfalsifiable. But it also makes him unverifiable.
That is very true, unfalsifiable and unverifiable.
So we are kind of caught in the middle, aren’t we?
However, if the messenger is a "perfect" reflection of your god, then you should be able to define your god simply by defining the messenger, right?
You are batting a thousand tonight.
Yes, we can know the Attributes of God by knowing the Messenger, usually referred to as the Manifestation of God, since He perfectly reflects the Attributes of God. The caveat is that God’s Essence is above all His Attributes, so there are things we can never know.
“Were any of the all-embracing Manifestations of God to declare: “I am God,” He, verily, speaketh the truth, and no doubt attacheth thereto. For it hath been repeatedly demonstrated that through their Revelation, their attributes and names, the Revelation of God, His names and His attributes, are made manifest in the world...” Gleanings From the Writings of Bahá’u’lláh, p. 54
Be all that as it may, basically you are running on faith and nothing else here. You cannot provide evidence that your god exists, and if he does, you cannot provide evidence that he is not in fact malevolent and has evil motives.....unless you are smarter than your god, maybe.
Baha’u’llah is the evidence that God exists. Yes, we have to have faith in Baha’u’llah, faith that He was indeed a Manifestation of God, but once we believe that, everything else follows from that belief.
Once we believe in Baha’u’llah, we believe everything He wrote is the absolute truth, because we believe that as a Manifestation of God He is infallible. We believe that whatever He revealed is this identical with the Will of God Himself. This is considered loftiest station to which a true believer can ever hope to attain.
You have no way to verify that the messenger isn't just feeding you B.S., either. How can you be certain of the ultimate veracity of either the messenger or the god?
Like I said, once we believe that Baha’u’llah was a Manifestation of God, we know that what He wrote represents the Will of God. That is called belief in Divine unity. In a sense Baha’u’llah was God, only not God in the flesh as Christians believe. The Attributes and the Will for God can be perfectly manifested but the Essence of God can never be known by anyone.
“The essence of belief in Divine unity consisteth in regarding Him Who is the Manifestation of God and Him Who is the invisible, the inaccessible, the unknowable Essence as one and the same. By this is meant that whatever pertaineth to the former, all His acts and doings, whatever He ordaineth or forbiddeth, should be considered, in all their aspects, and under all circumstances, and without any reservation, as identical with the Will of God Himself. This is the loftiest station to which a true believer in the unity of God can ever hope to attain. Blessed is the man that reacheth this station, and is of them that are steadfast in their belief.” Gleanings From the Writings of Bahá’u’lláh, p. 167