Editing Purpose of Jesus' death (section)

=== Victor Porton's explanation ===
While reading this article, I came up with an idea (first published in my blog):

Christ’s death was to demonstrate that an altruistic person will be rewarded (as in Christ’s resurrection and power over the entire heavens given) justly, even when at first it seems that this way leads to death.

This has shown to the heavenly powers that altruism works and leads to life rather than to death as someone may expect.

And this needs a sacrifice of God himself, because it is necessary to show that even the highest level of altruism is rewarded.

This way Christ pulled many heavenly being to his side of the war and won the war.

Unlike irrational human which may believe without a confirmation, rational heavenly beings in question need to see to believe. If only people's beliefs were in question, for Christ it would be enough to say "Believe me: Altruism leads to life, even at times it seems that it leads to death. Even if you die, God will resurrect you." without the need of death and resurrection of Jesus himself, but this would be enough only for people not for heavenly beings.

Please discuss this my idea further, especially how it fits with different Bible verses.