Here's another one I like to point out to theists.
Let's pretend for the sake of argument that we had 1000 written account's of the life, death and resurrection of Jesus.
They were all written by 1000 different people with different perpectives and biases who personally saw Jesus everyday. These people have had the ancient equivalent of a birth certificates survivery to today and the we can tell using various historian methods that they are who they say they are.
These 1000 hypothetical people kept daily logs of activities of Jesus 24 hours a day 7 days a week all of which had their originals survive. They all use similar recording methodologies and they all cross confirm each other.
Here's the problem; even under circumstances that ideal it would STILL not be sufficient evidence to support believing in the supernatural events surrounding Jesus. As eyewitness testimony, no matter how much, is insufficient to support supernatural events.
So even if we had that, and we don't have anything close to that, there would still not be adequate evidence to support his actually being able to perform miracles. So given the fragments of conflicting reports written by people that lived a generation later and didn't witness the events in the first place. Why believe?
Belief but its very nature does not require proof. It is like beating your head against a wall to bring this too the attention of a true believer in anything. So really the better question I would think would go something like this..... Believers in Christ, why do so many of you espouse belief in a man who clearly commanded you to feed, cloth and take care of the poor even at the cost of your own wealth yet you oppose that very act in all facets of your life. You judge, hate, ignore, vilify and oppose the very existence of the least among us. Yet call yourselves followers of Jesus. Explain this too me. Since you cannot challenge belief with reason we must challenge the reasoned actions and attitudes espoused by the belief in order I think to really accomplish anything. That is were you will truly show the hypocrisy of a believer not in the validity of the Myth but rather the clear message and how they fall short of it.