"I've been trying to suggest that it is mistaking the parameters of scientific inquiry to believe that science will one day have all the answers."
I see where the misunderstanding has come from. When I said "science will have the answers one day", I was referring to scientific topics like electron transport chain in mitochondria that puzi was talking about, not questions like "What is good?"
"It's not very likely that they just thought he was dead, though, given that he was crucified."
They took him down from the cross, thinking he was dead, because his vital signs were gone. Or were they just so low that they couldn't be detected without electronic devices?
"The simplest explanation is still the best one: he died and then he came back to life."
Death and resurrection is not "the simplest explanation"!
It is the most fanciful and convoluted one.
"You couldn't make it up, could you?"
Of course, you could. Especially if you want to convince an ignorant rabble that something exceptional and divine has taken place.
:He didn't 'arrange for himself to die': it was done to him, by other humans who had free will."
Are you saying God didn't know that he would be killed? Careful here. You don't want to mess with omniscience.
"But by willingly accepting that death, he turned back death upon itself and conquered it once for all. "
Why did God have to "conquer death"? What does "turned back death upon itself" mean?
"Sin is what divides humans from God, it is our relentless messing up, our relentless capacity to be stupid, and cruel, and hurtful, and inattentive, and lazy. Sin is when we don't do what God would want us to do"
Why do you think God created us in a way that would make everyone behave in a way God doesn't want us to?
"In dying Jesus joined us back to God, opened the door for us to walk right back in and claim our inheritance as God's children."
Was the door closed before?
What about people who lived and died before Jesus?