So I would just like to point out something I thought of... why were there guards at the tomb if no one had a motive to steal the body? Why else would guards be stationed in front of a tomb with a corpse in it and a huge rock in front of the entrance? To me this reeks of "someone had a motive to steal the body".
> Oh, excellent question. For that to have happened, we'll need to say who was there and why in that space of, what—about an hour? First of all, no one was expecting the resurrection, so there would be no reason we would expect anyone to be there at the time. Secondly, an earthquake and the passing out of the guards would instill fear, not courage. Third, why would this person think, "Oh, I'll steal the slaughtered body in this tomb!" What would be his or her motive for dragging Jesus' cadaver out of the tomb and into hiding, and then carefully arranging the graveclothes and head cloth into a nice pattern? While it's remotely possibly that some passer-by just happened to be there at the time (though not likely at all), we have trouble creating a motive that makes this alternative plausible. And then, of course, we still have to explain all the post-resurrection appearances of Jesus.
So basically we can't rule out that a person took the body when the tomb was open and unguarded.
The analogy I use for this is: Suppose you had a pot of soup on the stove. And you have a chair next to the stove because you were getting up to a high cupboard, or whatever, and you have a container of rat poisoning next to the stove. And you have a kid who really likes to help out in the kitchen, so he's liable to have poured some of the rat poison into the soup. So, you leave the stove, and you come back, and although you cannot prove that your kid put rat poison in the soup (thinking it was pepper or whatever), would you eat the soup? This is a very common problem of leaving something unattended and something bad could have happened that you didn't want to have happened. And you can't prove it happened but you can't rule out the possibility it happened. So, you treat it as a worst case scenario to be safe. As firemen or a bomb squad or 911 operators would do for example. What does a 911 operator do when he gets a call and no one there on the phone, just silence? Has to assume the worst, tracks the call if he can, and sends people out—just to be safe. Some high percentage of 911 calls are false alarms, but that doesn't stop the emergency responders from still treating every call seriously.
So it's the same thing with the empty tomb. We have to treat this span of time with the stone rolled off and no guards seriously. Do you eat the soup?; Do you conclude Jesus rose from the dead in other words? We wanted to say "praise the lord Jesus rose from the dead" which is a very extraordinary claim, so we must be careful. And we cannot rule out that someone stole the body. In other words we simply lack the information to confirm or deny if someone stole the body. Footage from a 24/7 security camera on the entrance would be ideal, but we don't have this. We might not be able to exactly pinpoint a motive but I can see people wanting to take the body to do a proper burial or whatever—this is not unheard of. You can google this and see that this is not unreasonable... people do it is all that I'm saying. And what were the guards doing there if no one had a motive to steal the body? So essentially the resurrection hypothesis has a gaping hole in it... a gaping wide open tomb entrance, to use an appropriate metaphor. It's not a watertight argument that the corpse walked off. I think given what I know, and given the information about the events there, that someone stole the body. We similarly can't argue that the body wasn't resurrected (so blindly I could use my logic against myself and say "I must consider the case where the body was resurrected, and thus accept that this happened"), but I just prefer to go with the more plausible explanation. I know of corpses being stolen, I know of not one corpse that's walked off. I'm worried that my unattended soup pot I described above was ruined... I'm not so worried that the inanimate pot will sprout legs and walk away... if I lived alone for example, I would happily leave the soup unattended for 20 minutes and not worry that rat poison in the cupboard made it into the soup.