Justin has started a blog which he calls blogosasarkos which in of its self is a great name. His recent post on “Hell” is well worth the read in how he engages with the passage in Mathew 25:31-46.
Then comes the judgment itself, the criterion of which is the treatment of the downtrodden by those standing trial. Why the downtrodden? Because they are the ones who are the least invested in the kingdom of this world; indeed, they are those whom the world has rejected. This, then, is why the Son of Man identifies himself as king with the hungry, thirsty, naked, homeless, and infirmed, for to the extent that the kingdom of this world fails to entice universal allegiance, ground is thus ceded to another kingdom – the hidden kingdom of Christ. The imperative of the parable, then, is this: choose now which kingdom you will serve. For those who choose the kingdom of this world, the way of Christ will always appear foolish and humiliating, since going that way entails forsaking the structures and systems which make living in the current order a pleasant affair.
And he follows with…
What we are about to witness is not the wicked’s, but Christ’s punishment; it is he who will receive sentencing before the throne of the world in the next few chapters. Yet this parable narrates the precisely opposite scenario: the judgment of the nations before Christ. When viewed in light of this contrast, a particular feature of the parable stands out, that is, the qualitatively different nature of Christ’s judgment from that of the world.
I highly recommend you read the whole article and his conclusion as to what he thinks Hell is. Whether you agree or not: he has stated his case well.