According to the “International Journal for the Psychology of Religion,” a team from the University of Finland recently connected a small number of atheists to a lie detector and had them read aloud statements like, “I dare God to make me die of cancer.” The study said that each of them broke into a sweat that was picked up by the lie detector.
Years ago we used a lie detector in one of our TV programs, and through it I learned something interesting. The machines are incorrectly referred to as “lie detectors.” They don’t detect lies. They detect the voice of the human conscience–that God-given, society-shaped knowledge of right and wrong. When a lie is told, the conscience produces an involuntary sense of dread, and that raises the heart-rate, producing detectable sweat on the skin surface.
The University of Finland team concluded, “The results imply that atheists’ attitudes toward God are ambivalent in that their explicit beliefs conflict with their affective response.”
In other words the detector said that they were lying when they said that they knew of no evidence for the existence of God.
So never believe it when an atheist uses his carefully constructed confession of faith–“I have no belief in any gods.” We know through scripture that he knows that the Creator exists:
“For since the creation of the world His invisible attributes are clearly seen, being understood by the things that are made, even His eternal power and Godhead, so that they are without excuse…” (Romans 1:20).
You need not convince him of God’s existence. He already knows that. You need rather to convince him of his mortal danger.