Which to my mind, raises an interesting question: Which do you think should take precedence? Revealed truths or direct experience? Why?
I don't consider either to be valuable by themselves.
Revealed truths can just be claims, and there are many ignored every day. Most people in the US, for example, ignore Indian gurus that have a million followers that say they have supernatural abilities. Or, people ignore those folks in mental institutions that say Satan or Jesus made them do it. Basically, a tiny fraction of people with words from deities get listened to. A way to sort any of the truth out is almost impossible, unless someone had actual knowledge from a deity that was interested in proving its truths, such as being able to walk up to any person and describe their entire history including inner thoughts, or something amazing like that.
Direct experiences can be misunderstood. Research has shown that eyewitnesses, for example, are really bad at remembering things correctly. That's why we don't really convict people of serious crimes on eyewitness testimony alone. It's too fickle. If someone says they have an experience, they could be lying, but often I believe they're telling the truth, but then could easily be mistaking what they experienced in any number of ways.
If anything, direct experiences can be initial points for further questioning. Like, if someone says they can get on a bed, meditate, and then have an out of body experience, we can ask details about what they see, and then based on what they claim to see, we can test it. Like if someone says they can look down from the ceiling, we can put something there that can only be read from the ceiling, and ask them to say what it is. This can help evidence whether their line of sight is actually coming from the ceiling, or whether from their bed position their brain is merely interpreting what the room would look like from up there, and is therefore limited to only information it has on the bed.
Or, if someone says they experience oneness, researchers can do brain scans and see what's going on. For example, meditating Buddhist monks were found to have high activity in the frontal lobe (associated with concentration) and significantly reduced activity in the parietal lobe (associated in that area with our ability to be spatially aware, and able to differentiate between self and non-self). So, rather than doubting that they subjectively experienced a sense of oneness, I would merely doubt that they experienced actual oneness, as in, I question the claim that they stopped being the island of senses that they always are, because they came back with no extra-sensory information of any kind.
So, direct experiences can at least serve as initial points to ask what they experienced, whether it happens often, what the details are, and compare it to claims of other people, compare it to attempt to stimulate it artificially (chemicals, electrodes, whatever), and do tests to see how accurate the interpretation is, if it's the type of thing that can be tested.