(quote from RealReality.org/Real_Faith_and_Reason_Vol_2_-_Scientia.pdf)

Divine revelation is the only way we can know anything about anything, and without divine revelation, we can’t truly know anything. Of course, we’re defining “knowledge” as precise, correct, and accurate knowledge of reality. It’s knowing the truth with certainty. And truth is reality. Truth is absolute and excludes everything that isn’t part of reality. Therefore, we don’t include such things as knowledge of made-up stuff in our definition of “knowledge.”

(end quote)