I almost had to pull over when the announcer called it his favorite song and stated that his church had used the song in worship time last Sunday, and everybody was just so blessed by it. This called back memories of a documentary I saw once of a crowd engaged in Transcendental Meditation, swaying back and forth, uttering the same phrase over and over again. The physical, emotional, and mental changes elicited by such manipulations are incredible, similar to the effects of hypnosis. The number of times something is repeated is important particularly in the context of worship, at least according to Jesus. Hypnosis, generated through repetition of sights or sounds, has no part in true Biblical worship.
Hypnosis permits the mind to disengage to some extent.
But Biblical worship requires the full engagement of the mind. Christianity is a religion in which the mind must be fully conscious and fully engaged. Our worship and praise must come forth from a lucid mind that is not clouded by hypnosis, unbiblical notions, gibberish that nobody understands, or over-simplified, meaningless, trite, or sentimental phrases. I will pray with the spirit, and I will pray with the understanding. I will sing with the spirit, and I will also sing with the understanding.