Was Three Hours of Suffering Enough? at Desiring God
Question: If our sins are punished by eternal separation from God, why did Jesus only have to suffer momentary separation?
John Piper: That's a good question, and I think there's a pretty clear answer. Go here to watch the video and read the answer.
update: I had a spelling correction. For some reason I used "suffern" instead of suffer" Could it be because I used to work in Suffern, NY?:)