Are we on the same page? For example, if I were to tell you what I ate for dinner last night (Corned beef, potatoes, cabbage, and chocolate pudding) my expectation is that you would take as truth that I ate the above for dinner not for lunch. I would expect you to take as truth that I did eat what I listed. There is no reason for you to not accept my experience of dinner last night as truth. There is no reason for you to claim I was just imagining my dinner or that it was only in my own mind that I had dinner at all.
Now, let's speak of the experience I had of God--one of love and the knowledge that God honors free will. I expect you to accept that I had the experience I described.
Note, I cannot claim that God told me He created the world, that He spoke with Noah and Moses, or even Jesus is His Son. He did not tell me to read the Bible, go to Church, or for that matter, to go swimming. No such conversation took place, no such knowledge was imparted. Nor did He say, "Meet my colleague, Vishnu." My experience was brief, seconds, covering love and free choice. The end.
You either believe I am describing a true experience or that I am lying. Frankly, I don't care which you believe. Further, just because I had a brief experience of God is no reason for you to change your own opinions about Noah's flood. I can present how I see the account of Noah's flood, but that does not mean I (or anyone) knows the full truth about Noah's flood.