Technically the passage is Then the LORD said: "My spirit shall not remain in man forever, since he is but flesh. His days shall comprise one hundred and twenty years."
If you were to take it exactly literally, that would mean that every human being would have to live for 120 years exactly. No more, no less.
Given that that is not true, if you believe this passage of the bible you would have to take 120 as a sort of estimate, given perfect health or something. I think this topic probably should be locked, since it will end up being pointless flaming. But whatever.
And @Irock, lol?
Many different translations of that passage give different conclusions, from what I have found the most common interpretation is that it is indeed an 'age-cap'
that originally man was to have everlasting life, but due to man's sin, God progressively shortened man's life in the "four falls of mankind" -- first to less than 1000 years, then to under 500, 200, and eventually 120 years.
[yeh, quoted from a bad source, but I really don't feel like bible searching right now]
Of course some feel the '120' years has nothing to do with an "age limit" but rather the time in which men where given to live, as Moses was given this proclamation 120 years before the world flood occurred, so god was not saying men could only live to 120 years, but they have 120 years until he destroys them with the flood.
Either way, both are disproved; there's no empirical evidence of a major flood as described in the bible, people have lived passed 120 (and will live much longer in the near future) and if it's a 'guide' as said by MA, I feel that is also fallible as people are only living to such an age now because of sentient intervention, not good health. So unless god was talking about medical science, I just don't see it happening.
lol, I'd hardly call the Westboro Baptist Church a real church.
Why? Because you don't like them or agree with what they teach?