Doctrines are policies or ways to followfrom what "is written" in the Holy Bible.
But the trouble is different people have different interpretations of what "is written."
This caused the division of CHRISTIANITY into sects and denominations.
Therefore, what is the TRUTH?
Let ALONE God expound on His words "through His very words," and this is what is to be regarded as "divine revelation."
Example, the very IDENTITY of Jesus Christ is foremost of these doctrines! Why do we hear people say:
* Some say, "Jesus Christ is only a man and not God."
* Others say, "Jesus Christ is only a Mighty God for there is a supreme or Almighty God."
* Still others say "Jesus Christ is the name of the FATHER and the HOLY SPIRIT."
* Many say, "Jesus Christ is both God and man, and He is the SECOND PERSON of the Trinity."
You were right to say that let God expound on His words as what in the book of II Tim 3:16 says "all scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness"
Also the bible says that God is true, but every man is a liar. But we must also realize that if God wanted to deal with His people He used man. And so we just only need to know the right fellowship because there is only one true Church or the body of Christ. I do believe that Jesus will not return into various churches but instead he will go back on His own church.