>>Any believer has the Holy Spirit living in them and the Holy Spirit guides men into all truth.
The problem with that idea is that there are countless confirmed believers who apparently are NOT being guided into all truth because their beliefs regarding various Scriptures directly contradict the beliefs of other believers.
Scripture is true whether everyone agrees with it or not.
The Holy Spirit DOES guide all believers into all truth.
Whether they accept it or not is their business but their not accepting it does NOT negate the truth of the Scripture as given us by Jesus.