Using the right instrument

My wife and I had season tickets to the American Conservatory Theater in San Francisco. The season just came to a close with a "gangster musical" called "Happy End". One of the characters is part of the Salvation Army and about to give a sermon about new technologies like the radio ("new" for 1929). She says that some people think it's crazy to believe in God because you can't see him. A French astronomer had searched the heavens with his telescope from one end of the galaxy to the other and was never able to find God. But he had been using the wrong instrument. You can't see radio waves and it's a little crazy to think that all these messages are magically flying through thin air. But when you have the right device tuned to the right frequency, suddenly a very real, undeniable message comes through loud and clear. God is the same way. He is always broadcasting but we must learn how to use our minds and our hearts to tune into his message.