Now THAT is the question!!
Depends if you want to classify it as a miracle or a fact. A fact requires evidence, a miracle does not.
We do have empircal proof - eyewitness testimony as recorded in the historical narratives of the Bible. It's the only type of empirical proof available for any historical event.
“Better question: DID David kill Goliath? Ask for empiricle evidence....and the respondant may not use any biblical “proof” as “evidence”in the answer.
Now THAT is the question!!”
And what exactly are you looking for? Obviously, the Bible recounts the story as a witness or report from a witness. Do you have any witness to say with any credibility that it is false? Thought so, just another atheist fool spewing dumb rhetoric and thinking they sound smart...
Yet a better question is whether such an act, killing someone with a sword on a battle field many centuries ago could be expected to leave any evidence other than eye witness accounts?
What sort of empirical evidence did you have in mind?