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Heck, I'm an atheist, and I know the Bible - better than most Christians!
They seem to find that very confusing. :D
The Widow's Mite: http://en.wikipedia.org/wiki/Lesson_of_the_widow's_mite
The point of the parable of the Widow's Mite is relatively straightforward. A poor widow gives only two mites to a temple, while wealthier people give far more. But Jesus points out that the mites were all the widow had, while the larger gifts of the wealthy represented a relatively tiny portion of their wealth.
In other words, the gift of the poor woman was worth more than the gift of the rich.
This is an interesting point in many ways, and is relevant to a number of fields; economics, for instance. It's also a good illustration of why the Bible is a useful reference tool, well worth reading even for non-Christians. I found it to be an extremely useful source of quotations and concepts when I was writing papers in college, in writing of all sorts since I graduated, and while debating Christians online.