Your question is very well founded. The only problems I see with it are these. First if anyone in today’s world says they have a new revelation of any kind the vast majority of christians [notice the lower case “c”] will either out right reject both the message and the messenger, or they don’t really know how to study the Word so that they may compare “line upon line, and precept upon precept.”
With human nature being what it is, and having the power of choice to accept or reject truth, there is often a great difference between knowing the truth, understanding the truth, and explaining the truth. There is much truth available today that is not accepted or understood. Every Christian should be praying for the outpouring of “The Latter Rain” of the Holy Spirit for understanding.
Respectfully your brother in Christ,