I agree that, of the various subtopics in this thread, the question of what the hell christians think crucifying somebody accomplishes is among the most interesting. (Though I’d be okay with discussing what it would take for atheists to be impressed by crying statues too.)
So then, let’s look at this. Let’s see if this explanation makes sense.
What’s the difference between a self-sacrifice and committing suicide?
Supposing you jump in front of a truck. That’s suicide.
Supposing you jump in front of a truck to push somebody else out of the way. That’s self-sacrifice.
So what makes “getting killed for disturbing the peace and annoying the moral majority” a sacrifice rather than suicide?
Obviously the act itself has no effect from a mechanical perspective. Jesus is not full of magical blood that makes angels sprout from the ground when he’s punctured. Which means that the act itself has to impress somebody.
So what made this suicide into a sacrifice?
Based on this (specifically the tail end of it) the reason why Jesus got himself executed was because God told him to get himself executed, and what pleased god was that somebody was finally being obedient to him. So in other words, something like this:
God: Damn you all, you’re so disobedient, I’m so pissed at you!
Jesus: I’m not disobedient.
God: Okay, yeah, you’re fine. The rest of them, though, they’re gonna burn! Floods and fire and pillars of salt for the lot of them!
Jesus: Can’t you ignore all that and focus on how wonderful I am instead?
God: I expect obedience as a baseline. Normal obedience doesn’t impress me.
Jesus: Well, what would impress you?
God: If you did something really stupid and pointless and painful, that no sane person would ever choose to do, just because I said so.
Jesus: Like what?
God: First you go get mortal like all the rest of these losers. Then you suffer, like, a lot. Just absolute tons. In fact, I’d want you to go through it twice - first I’d want you to pray so hard you bleed for it, and like, all your friends will sleep through it! Nobody will be there to watch you bleed!
Jesus: Why would I want them to - I mean, oh my, that sounds awful.
God: I know, right? I wouldn’t be able to handle it if my angels stopped praising me for even one moment. And get this, later you get mocked and ridiculed, with no praise at all, and while that’s happening you’ll get stripped and beaten and your head will get poked with those thorn things I made and then you’ll get nailed to some of that wood I made and just hang there and suffer!
Jesus: That really does sound awful!
God: Doesn’t it? And you’ll be like that for most of an evening!
Jesus: That… what?
God: Yeah! And then I’ll suck you straight back up here and shower you in glory and praise you lots forever. You’ll be loved by everybody, almost as much as they love me! (But not quite.)
Jesus: You know, I’m liking the sound of this.
God: And after this amazing, incredible display of obedience and suffering the likes of which nobody has ever experienced ever, I’ll be so happy with you that I doubt it’ll even cross my mind to give the rest of those worms the eternal torture they deserve.
Jesus: What? Oh, right, them. Er, are you sure that me suffering for a few hours balances out billions being tortured forever?
God: What? I dunno, I’m eternal, I don’t really ‘get’ this whole ‘time’ thing. Don’t you think it’s fair? Should you get tortured for longer?
Jesus: Oh no, no no no, an evening is a very long time, much suffering, very much suffering.
God: Right, like I said.
Jesus: So when do we start?
God: Just as soon as I get around to starting humanity on that planet I made for them. Which I’ll do any minute now.
(4.5 billion years later…)