In fairness to those who may be searching for truth and who themselves have questioned the authenticity of the Bible because of its miracles, let me add that many who are now believers once shared that same skepticism. But I submit to you that it is precisely those stories, as told, which make it improbable that the events were contrived. True, there are some books which have a few such tales, but not with the same scope or in the same surroundings as the Bible. Unlike myths, biblical miracles are presented in a historical context, that is, in conjunction with actual historical events, many of which can be verified by archeology. No fanfare, sometimes not even a comment.
Miracles occur in a framework of reason and logic.
There are no miracles just for the sake of miracles. I would like to comment more specifically on this last point. Let's put this in our own context. You see, the events of a nation are known and understood by that nation, even if they are not written down right away. Yet all the events of the Old Testament revolve around the nation of Israel.