As for the alleged appearances of Christ to the disciples, those appearances may be explained in several ways. We may say that Christ really had risen from the dead, and was miraculously present; we may say that the accounts of His miraculous appearance are legends; or we may say that His reappearance was not miraculous at all, for He had never died, but only swooned.
As Huxley remarked, when we are asked to consider an alleged case of resurrection, the first essential fact to make sure of is the fact of death. Before we argue as to whether a dead man came to life, let us have evidence that he was dead.
Considering the story of the crucifixion as historical, it cannot be said that the evidence of Christ's death is conclusive.
Death by crucifixion was generally a slow death. Men often lingered on the cross for days before they died. Now, Christ was only on the cross for a few hours; and Pilate is reported as expressing surprise when told that he was dead.
To make sure that the other prisoners were dead, the soldiers broke their legs. But they did not break Christ's legs.
To be sure, the Apostle John reports that a soldier pierced Christ's side with a spear. But the authors of the three synoptic Gospels do not mention this wounding with the spear. Neither do they allude to the other story told by John, as to the scepticism of Thomas, and his putting his hand into the wound made by the spear. It is curious that John is the only one to tell both stories: so curious that both stories look like interpellations.
But even if we accept the story of the spear thrust, it affords no proof of death, for John adds that there issued from the wound blood and water: and blood does not flow from wounds inflicted after death.
Then, when the body of Christ was taken down from the cross, it was not examined by any doctor, but was taken away by friends, and laid in a cool sepulchre.
What evidence is forthcoming that Christ did not recover from a swoon, and that His friends did not take Him away in the night? Remember, we are dealing with probabilities in the absence of any exact knowledge of the facts, and consider which is more probable—that a man had swooned and recovered; or that a man, after lying for three days dead, should come to life again, and walk away?
Apologists will say that the probabilities in the case of a man do not hold in the case of a God. But there is no evidence at all that Christ was God. Prove that Christ was God, and therefore that He was omnipotent, and there is nothing impossible in the Resurrection, however improbable His death may seem.