Thanks for clarifying. Anyone, of any belief, can have immediate, apparently self-evident experience that validates or defines their worldview. But we need good reason to believe our experiences are about reality, and are not just a bunch of things that we feel very strongly are about reality, but in truth are not.

And again, there is a sense in which union with God is dependent on logic, inasmuch as logic (logos/Word) is just another way of saying reality :-). That which is illogical is not, and cannot be; it is non-being.