When Jesus breathed on His disciples and said, "Receive the Holy Spirit," He was not transmitting a thought or feeling to them; He was not transmitting something imperceptible, either. He was turning the light back on inside of man…the life of God is the light by which we see! Atheistic scientists do not believe in God because they cannot perceive Him. The reason they can't perceive Him is that their spiritual perceivers (i.e. their spirits) are not working. When Adam and Eve ate from the forbidden tree, their spirits died—the light went out, and people became spiritually blind.
All around us, even now, are radio waves. One can tune into the classical station (101.1 FM) if one merely adjusts the radio dial to "perceive" the frequency. If the radio is broken, one might not ever know there is a classical station. If another person is completely ignorant of what a radio is, they might accuse someone who tunes into the radio as being "mystical" or "delusional."
Since God is Spirit, it requires that we tune into His wavelength...His frequency...to perceive and observe Him directly. This does not negate the natural world; it transcends it. To observe Him “scientifically” is possible when your spirit is alive and functioning. One must have a properly functioning instrument to see what cannot be seen with the natural senses. If we say the spiritual man is unscientific because he perceives what we cannot see with natural senses, we must also say the astronomer is unscientific because he perceives what we cannot see with the naked eye.
Telescopes, radar and radio tuners are merely tools to perceive what is imperceptible to the natural man. The spirit of man is much like this. Creatures like bats, dolphins and whales use sonar. The killer whale actually takes a sonogram of his observed subject. He can perceive its temperature and heartbeat, and whether or not it is warm or cold blooded. He knows if he does or doesn't like to eat it because of his functioning sonar. The shark, on the other hand, has no such faculty. He has to take a bite to see whether or not he likes his potential supper.
The spirit of man is the lamp of the Lord…the ignition of His Life brings light to the soul. If one’s lamp is lit, he is not in darkness. The mature Christian can know the difference between his thoughts, feelings and spiritual perceptions, just as much as he can know the difference between television and radio. He can even come to know the difference between 101.1 FM and 94.9 FM. Not many people tune into the classical station and think they are watching Good Morning America. But then, the insane person might look out the window at nature and wonder if, maybe, he has turned on The Discovery Channel.
Long ago people thought John Colter (the "white man" who discovered Yellowstone) was a liar upon his description of it. They called it “Colter’s Hell.” Atheistic scientists do not believe in God because, like Yellowstone, He is unfathomable to them.
The reason one believes astronomers when they say there are red giants in the heavens, or supernovas, is because astronomers have seen them with telescopes. To deny the instrument is an easy way to deny the discovery. Not to tune in to the classical station's frequency does not nullify the station. It merely keeps one from hearing the music.