“Nothing is esteemed a miracle, if it ever happens in the common course of nature.”
— David Hume, Enquiries Concerning Human Understanding, Section X, Part 1, para. 91.
It seems to me one of the things that the Jesus Seminar so frequently forgets is that the Gospel writers understood miracles just as did Hume. They were describing something outside of the normal course of nature, that is, something miraculous.