The Existence of the New Testament
The New Testament is an extraordinary collection of documents. Multiple authors, mostly independent, all testifying to the same historical events and reality. The groundswell of careful copying of these documents is amazing.
The resurrection accounts have the sense of authentic testimony, they feel real. They are imperfect enough such that they definitely do not appear to be made up.
It is hard to explain the shape and resurrection focus of the New Testament other than by the fact of the resurrection of Jesus.