There was an interesting book -- "Jesus Lived in India" by Holger Kersten.
Anyway, the Bible is full of enough half truths to put the full truth together.
First, Crucifixian is not a very lethal weapon. It is akin to hanging a person in a cage and letting them slowly starve to death in full public view. Being in a cage is only lethal because of the effects of starvation and exposure. This is almost equally true of Crucifixion. Nails in one's hands and feet are not really so extremely fatal, are they. yes, I have read articles which say that it is difficult to breath when hanging upon a cross all day, but even then, we have no historical references that insist that Crucifixion was typically fatal in the short term. What history does tell us is that Crucifixion was a form of SLOW torture, where the entire idea was to stretch out the suffering over a great deal of time. Crucifixion was a Poor Man's Iron Cage.
And Jesus only spent several hours on the Cross until a very Rich and Influential Man name Joseph of (Name of Huge Estate) came forward and paid the Roman's to bring Jesus down early. Now, Jesus was beaten up very severely and he had been flogged. To be intellectually honest, it has been known that some people actually do die from severe floggings -- you see, people go into shock. Flogging has always been one of those punishments where it greatly matters whether one has friends or not. If a flogging victim is immediately cared for -- treated for infection and kept warm, then the chances for recovery are good. But if a flogging victim is simply thrown to his own devices -- and who can treat wounds on one's own back? -- then flogging can be almost certainly fatal. Anyway, it is likely that Jesus was not treated for his Flogging Wounds, but was immediately put on track to be Crucified. So, to be honest, Jesus could not have been expected to Live Forever under those conditions. But he was a strong, healthy strapping young man, and so if anybody could have survived...
We know what the Bible says, but Holger Kersten has been able to find at least some hints of documentation that indicate that Jesus may have gone on to Damascus, to get outside of Roman Jurisdiction, and then went on to India.