"Keep in mind that Rife only had 5 frequencies. The eleven page frequency list being used with many of the units on the market is bogus. In fact one of the frequencies listed for cancer is 42hz, which is a cancer causing frequency. It is the same frequency for the carcinogen formaldehyde. Rife later dropped two of the frequencies because they were found to interfere with the first three. My father started studying the frequencies and found that there was a correlation between the frequencies he kept and the Earth's primary frequency (7.83hz), which also happens to be our primary frequency. Actually the last two frequencies were actually both off by one, which also explains why they were so much slower to work than the 666hz frequency. If corrected they would work just as well" - Hveragerthi

I don't understand how bombarding the body with 666hz will somehow make the body resonate at 7.83hz, wouldn't it make more sense to bombard the body with 7.83hz itself?

Not necessarily.  The problem is that it would be next to impossible to get the frequency to travel all the way through the body.  Higher frequencies reduce resistance allowing further penetration. I found this out when trying to use a 6,000 volt solid state transformer to make an ozone tube.  The solid state unit, which operates at 28,000hz fried all my tubes as where the "pig iron" 6,000 volt transformers operating at 60hz barely did anything.

Also, isn't this incorrect as different parts of the body have different frequencies and sometimes the same parts shift - such as the brain going from alpha to beta to delta to theta waves?

Yes, but we are talking about different types of frequencies.  The brain waves are electrical frequencies.  The vibrational frequencies of the body are not the same thing.  The vibrational frequencies, known as resonant frequencies, are believed to be at least in part the from atomic resonance.

How in the world, even in basic concept, is 666hz supposed to be beneficial?

I cannot explain it very well.  It was my father that figured out the link and when he tried to explain it to me most of it went way over my head.  Math has never been a strong point with me.  What I do know about Rife's three frequencies was that they were acting as "beacons" to allow the body to find its way back in to its primary resonance.  The body does have various resonant frequencies, but 7.83hz is the primary.

How can we measure or find online an accurate frequency for various things such as frequency of water, or our cells? Have brain cells all been measured to be the same frequency?

Measuring resonant frequencies is not the same as measuring electrical frequencies.  There are different types of machines though that have been used to measure resonant frequencies.

Does everything have a frequency including things like heat?

Yes, everything has a resonant frequency.  A rock has a frequency, diseases have frequencies, even time has its frequencies.  To really explain this in detail though would take a lot more time than I have right now.  If you want to research the concepts though you can try researching under things like psionics or even the government's remote viewing program.  Remote viewing is nothing more than tapping in to the resonant frequencies of time.

All this can be very hard to accept at first, but if you look in to it deep enough there is a very strong scientific basis behind all of it.