I told you last time that David Hume lived from 1711 to 1776 and was born in Edinburgh, Scotland. None of you batted an eye. That's not an extraordinary claim. We are also generally very good at judging the veracity of testimony. He's never experienced water when it's really, really cold.
Nothing is esteemed a miracle, if it ever happen in the common course of nature.
There must, therefore, be a uniform experience against every miraculous event, otherwise the event would not merit that appellation. In other words, by definition, a miracle violates the expectations of our experience, and if experience is the basis of our knowledge, then we can never be in a position to claim to know that a miracle happened. Therefore, it's never reasonable to believe in miracles. This being the case, there is no more reason to believe one set of miracles over the others. He admits that he can't say that miracles have never happened.