Please bear with me, then, as we step back and think about the Old Testament for a moment. I shouldn't have to apologise for asking you to do that, but so few people seem to bother! It will take a little time, but it will really help us when we come back to the question of the human and divine aspects of the cross. You see, part of the problem with so many theories of the atonement through the centuries is that they try to explain the death of Christ in terms of other stories or worldviews where it does not really fit, while ignoring the one story in which it is actually set - the biblical story of God's dealings with Israel and of God's mission through Israel to bring salvation and blessing to the world.
(Chris Wright, The God I Don't Understand, p.145)
It would take a very long post to summarise how he then works this out in detail (which post this isn't). But his basic premise is worth pondering by all who have encountered the debate.