The New Testament is written as a historical document by at least seven independent writers, and contains many eye witness testimonies. The burden of proof lies with those who proclaim it to be myth.
Firstly, the New Testament was not written. Various historical works, long after the fact, were gathered together and some of them were selected into the compendium that we now call the New Testament - it was never conceived of by at least the majority of the authors as a single work. The 'independence' of those seven writers is highly questionable, given that a) we can clearly see the sections within (for instance) the gospels where they are copied from each other and b) the various pieces of editing that have happened over the centuries by subsequent writers.
It is highly unlikely that the vast majority of the claims in the work were related to the authors by eye-witnesses, given the time between the alleged events and the writing. Given the well-demonstrated unreliability of eye-witness testimony, that's not something to inspire a great deal of confidence even for the few events that might be second-hand accounts, especially given that these would have been recounted at least several decades later.
This is before you get to the political/theological motivation for the selection process(es) that decided which works would be canon and which wouldn't, and the selective editing of those works in several cycles later, and the various translation errors and deliberate misdirections, and then finally the decision to move the work to English with an eye more for poetry than accuracy.
All of which is beside the point to the crux of your assertion: it's never on us to prove that your claim is myth. You're making the claim 'MAGIC' - it's on you to prove that or we can simply ignore the claim.
O.