Agrippa is the earliest philosopher we know of who pointed out that the human mind can’t reason to truth. It can’t manufacture truth from thin air. It ends up making up stuff and calling the made-up stuff true. It can’t get outside itself to be objective, so it has to interpret every observation and experience. But it has nowhere to get the information with which to interpret, so it makes up stuff. Every form of secular epistemology (the science of trying to understand what is real or true) is based on unproven, unprovable axioms that are accepted as facts without evidence. In other words, the top intellectuals are all making up stuff and calling the made-up stuff “true” then calling that “reason.” Without truth, there is no rational thought.

Without divine revelation, the human mind has no way to reach a logical conclusion about anything. That may sound like an overstatement, but it’s true. And this condition is unnecessary. Anyone who seeks Christ finds Him. He leads, teaches, and corrects anyone who follows Him. He supplies that basis for sound reasoning. He supplies the truth. Sound reasoning must be based on truth. Ungodly thinkers know that the human mind can’t reason to truth. The human mind can only make bare assertions. We can’t reason beyond what we can observe and test unless we have divine revelation. However, ungodly thinkers almost always want to reason beyond what they can observe and test. They want to reason about morals, ethics, the origin of the universe, what happened to the dinosaurs, God, and you name it. When they do that, they are irrational. If these ungodly thinkers have Ph. D.s, those degrees won’t help them to reason beyond what they can observe and test. A secondary problem arises. When they refuse to acknowledge Christ, they begin to lose the distinction between what they can observe and test and what they are just making up in their preconceptions. They lose the distinction between reality and make-believe.