The unique thing about Christianity was that it was so simple to disprove.
Although most religions make claims that are designed to be impossible to refute, not so for Christianity. Christianity’s primary event, the resurrection, would have been simple to disprove if it were fabricated.
Although it should have been simple, it was never disproved.
A bunch of young guys from out of town, with no budget, no local connections, and no mob support would have had to pull off an impossible heist, in which they had to steal a high profile body from Roman soldiers without being detected. Even if they succeeded, they couldn't secretly bury the body because the city was over packed with visitors for Passover. They couldn’t secretly burn the body because it would require a large fire and attract attention. They couldn't secretly carry a body out of town without being noticed and arrested. It would have required them to dispose of the body none-the-less. Despite a thorough investigation no body or even bones were ever found, and the tomb stood open for the public to see. Th witnesses would have had to maintain their conspiracy for the rest of their lives, no easy task. Despite the difficulty, those who claimed to have seen Jesus after his resurrection stuck to their story for the next 40 years, retelling the story with astounding consistency throughout the world, and eventually died to prove they were telling the truth.
That’s the power of Christianity, that it would have been so simple to disprove, and yet, no one has been able to do so.