Are miracles in the bible literal? | John 2:23

Yes, the miracles of the Bible are to be taken literally, just as all Scripture is to be taken literally, except those portions which are clearly intended to be symbolic.  Each of the miracles in the Bible served a purpose and accomplished something that couldn't be accomplished in any other way.  Once we begin to doubt the reality of any miracle, we have to discount everything the Bible says came about as a result of the miracle, which puts all of Scripture in doubt.