Hey Charles.....that's why
they are called "M-I-R-A-C-L-E-S".....
But though he had done so many miracles before them, yet they believed not on him...
John 12:37
"The clearest evidence would be requisite [required] to make any sane 
man believe in the miracles by which Christianity is supported, -- that the more we know of the fixed laws of nature the more incredible do the miracles become."
CHARLES DARWIN (1876) (In Barlow 1958, 86)