The point I am trying to make is that you can never rationally converse with someone about Biblical doctrine if their experience is in contradiction to that doctrine. Just for example, suppose you are talking with someone about tongues, and your position is that tongues has passed away. If that person has had an experience of speaking in tongues it is unlikely your doctrinal explanation, no matter how masterful and Biblical it is, will convince them that what they have experienced is not real. "Since I have experienced it, it must be true, and it must be from God."
People who propose and teach abborant doctrine often claim they are having "revelations" from God.
Just a few months ago a person was up here claiming that God needs all of us to do His work on Earth because after Jesus resurrection He no longer had a physical body. The red flags immediately went up and the easy response was the words of Jesus after His resurrection ... "a spirit has not flesh and blood which you see that I have" ... but then explanation fell on deaf ears.
Doctrine is of fundamental importance ... too many folks these days are willing to ignore or substitute doctrine for unity or in persuit of a more exciting spiritual experience when the "formula" for Christian living is in the plain black and white text of the New Testament.