A concise yet brilliant illustration as to the importance of proper writing and punctuation:

“Pause in the wrong place and the sense of a religious text can alter in significant ways. For example, as Cecil Hartley pointed out in his 1818 Principles of Punctuation: or, The Art of Pointing, consider the difference between the following:

‘Verily, I say unto thee, This day thou shalt be with me in Paradise.’
‘Verily I say unto thee this day, Thou shalt be with me in Paradise.’

Now, huge doctrinal differences hang on the placing of this comma. The first version, which is how Protestants interpret the passage (Luke xxiii, 43), lightly skips over the whole unpleasant business of Purgatory and takes the thief straight to heaven with Our Lord. The second promises Paradise at some later date (to be confirmed, as it were) and leaves Purgatory nicely in the picture for the Catholics, who believe in it.”
—From Eats, Shoots & Leaves, by Lynne Truss