pakeha
I think that's because Paul invented something new, at least for the mass market, not a human sacrifice for the benefit of the survivors, but a suicidal-sacrifice that the victim survives physically (pneumally?), but not psychologically. Its relationship to earlier Jewish mythology is the magical "undoing" of the rebellion of The All Mother (who's kidding whom? Her feckless husband was along for the ride - I will never understand what she saw in that guy).
Paul's Jesus does the opposite, rejects the grasping self-help way to godmanhood ("storming heaven," so to speak, found in other myths, both Jewish and pagan), and does it the "right way," fatally empties himself and lets YHWH elevate him (nothing new that elevation is a prerogative of divinity - something our pagan friends would definitely be familiar with as what Odysseus refuses to accept from Calypso - refuses in order to resume his accustomed earthly personal life).
Christ is at least two things in Paul: the legendary Messiah role that Jesus fulfills, and a continuing quality that isn't peculiar to the person of Jesus alone, as in Galatians 2:20,
I have been crucified with Christ, and it is no longer I that live, but Christ living in me. That life which I now live in the flesh, I live by faith in the Son of God, who loved me, and gave himself up for me.
"I live by faith," I think, is not the familiar Protestant "sinner's prayer" or altar call, nor the busy ritual "bells and smells" activities to which Protestantism is the reaction, but rather personal identification with the qualities of the Christ. Paul didn't "see" Jesus, he became what Jesus had become, the peer of YHWH. The price for that is the death of individual personality ("I have beem crucified with Christ").
That is madness, but a very attractive and heroic sort of madness, as is Odysseus' refusal to have anything to do with it. If you were living the life that Odysseus was, then it might be a hard choice. If you're a slave, or a woman in some cultures, or ... , then madness may be the best offer you've had all day.