After posting my response to Wright i found this on the internet. N.T Wright answers a question on hell terminology.
“What did Jesus mean by “aionian fire”, “aionian punishment”, “Gehenna”, and “katrakrina–damnation”?
“Aionian” relates to the Greek aion, which often roughly translates the Hebrew olam. Some Jews thought of there being two “ages”–ha`olam ha-zeh, the present age, and ha`olam ha-ba, the age to come. Aionian punishment and the like would be punishment in the age to come. Gehenna is the valley of Hinnom, at the southwest corner of Jerusalem. It is where Jerusalem’s main garbage dump was, where trash smoldered with a steady fire. It became, for some Jews prior to Jesus, metaphorical for some kind of postmortem punishment.
Thus, Jesus’ warnings of judgment function on two levels. The first involved postmortem disaster; the second indicated that if his contemporaries didn’t turn from their ways and follow his way of peace, the whole of Jerusalem would become, as it were, an extension of its own garbage dump. This warning was fulfilled in A.D. 70 when the Temple was destroyed and the city was set on fire.
Katakrima (not katakrina) is the sentence of condemnation passed by a judge or court of law. It is used metaphorically in the New Testament for God’s just judgment on those who fail to worship him and so to bear his image.
My thoughts about this idea of image-bearing and a doctrine of hell are expanded on in my book Following Jesus. A quick summary would go as follows: We find throughout Scripture that humans are invited to worship the God in whose image they are made. By worshipping this God (which involves repentance and faith; the faith involves learning to recognize this God in the crucified and risen Jesus), they are restored as image-bearers.
When people continually and consistently refuse to worship this God, they progressively reflect this image less and less. Instead, they reflect the images of what they are worshipping. Since all else other than the true creator God is heading for death, this means that they buy into a system of death. Thus, failure to worship the God revealed in Jesus leads, by one’s own choice, to an eventual erasing of that which makes us truly human. I think this is the way a doctrine of hell might be restated today. “