Silence - except in the presence of the experts
Witnesses to miracles cannot honestly say, "You must believe me." There is no
must about it. To say you see a miracle is to tell people, "Decide if this is
real, if I have something wrong with me, am lying, stupid or some force is
tricking me." Putting a must into it is sufficient to show that the miracle
claim should be dismissed.
If I experience a miracle, I have no right to ask or tell anybody else to believe in it. I have no right to even mention it - I would not be mentioning it unless I was encouraging the other person to believe! If I see a man commit a murder, it is not others I should be telling but the appropriate authorities for only they are qualified to check me out. Miracles encourage disrespect for nobody does that.