You claim knowledge of your own salvation here on FR. That is one fruit of Gnosticism.
and mysticism
Monastics and mystics are a nearly 2000 year tradition of Christianity. The Canon of Scripture and the Creeds would not have been written in anywhere near the time if it wasn't for them. Not to mention the definition of the Trinity.
and dark nights of the soul
The Church Fathers sometimes did.
we do not talk to the dead
Good for you.
We believe God has revealed Himself in the scriptures...
Very good.
He laid out all we need to know about Him and what is needed for salvation and to walk out our faith..
Ah, then you will be jettisoning the works of Calvin and his successors within the day. Jesus did not preach such teachings, and neither did the Apostles or the Church Fathers. Since you guys profess the Nicene Creed, you believe in the Apostolic Church, which includes the Church Fathers.