I grew up in the LCMS.
I was going to Concordia Bronxville when the SemInEx walkout occurred in the seminary.
I knew very well that the people who were labeled as heretics were no such thing; after all:
1 of them Baptized me.
1 of them confirmed my father.
1 of them ran the parochial school that I went to.
1 was our local bishop.
(In simple terms, what happened in the LCMS is what happens when you put a politician in a pastoral church office.)
After losing my fervor for the Missouri Synod I joined AELC and later ELCA.
I had "insight" during a meditation period after a yoga class that was unexplained in anything I had ever heard about in Lutheranism or any other Christian philosophy.
I had an experience that put me on a path of Jnana Yoga (also called gyana yoga). It was a 10 year search in an attempt to answer the question "WOW! WHAT WAS THAT?"
For me, this took the form of a neti-neti (not this-not that) search which attempts to define something by eliminating what is definitely is not (process of elimination.)
It took me through the mystic theology of Hinduism, Tibetan Buddhism, Taoism, and finally brought me full circle back to Christianity where I found the answer in Eastern Orthodoxy.
I have described the internal sensation as: Imagine that you are alone, in Mammoth Caves, with all of the lights turned off. This gives a hint of the sense of immensity, absolute darkness, and absolute silence that I discovered WITHIN MYSELF.
I live in Rochester, NY where there is a home base for "Tibet in Exile" and we have visits from High Lamas and even the Dali Lama himself. One of them instantaneously told me "That was Inverted Samāadhi, a rare experience where one gets their insight at the beginning of their path."
Ever since my Inverted Samāadhi, I have the ability to "turn off my mind" when I meditate for several minutes and experience absolute silence in my mind. Everybody else tells me "that's impossible", so I just don't bring up the subject again.
My search lasted for 10 years because it is extremely difficult to get a handle on a phenomena when it is outside of any of your other experiences and you have no words for it!
I finally got a handle on it when I read what Pseuo-Dionysius (St. Dionysius the Areopagite) wrote about it when he called it THE DIVINE DARKNESS.
Orthodoxy has worked very well for me because it is also a mystic religion, allows me to use my perception of non-dualism, and also practices Apophatic Theology a.k.a. "Negative Theology."