An airplane crash would not be an extraordinary event. We have seen them happen and will see them happen again.
However, to say that Jesus walked on water, turned water into wine, was born of a virgin, etc would mean that some very extraordinary events occurred, to say the least.
For evidence, I would certainly require more than the written words of Jesus' followers, all who have a stake in making others believe that said events occurred.
My cat is really a dog and told me that, at some totally unspecified time in the future, a great war will occur.
The above sentence appears to meet your burden of "proof".
My point was, 2000 years ago, there was NO technolgy available OTHER than the written word.
What do you want?