Why was the crucifixion necessary ?

[pgrimes15]

I'm not trying to be trite or facetious, but it just does not make sense to me that a human sacrifice was necessary, in and of itself, to the exclusion of all other courses of action (like flying off in a fiery chariot).

More broadly speaking, when is a human sacrifice ever needed for anything.

Don't know what you mean.

In order for the message that God/Jesus had suffered through being (sort of) separated to be conveyed to humanity was it necessary to physical torture and execute the human body that God/Jesus was occupying. If it was necessary, and no other course of action would have had the required result, why ? What was it about this execution that did what nothing else - for instance flying off in a fiery chariot to the sound of celestial trumpets - could do ?

I am sorry if my meaning wasn't clear before. I cannot think of a way to phrase this question in a better way than "Why was the crucifixion necessary ?".

Regards

Grimesy