The words that are usually translated as hell, usually only refer to the state of being dead and not some place of fiery torment. (Sheol, Hades and Gehenna) In Jeremiah when he was addressing Israel on their burning their children alive to Molech, he stated that such an act never came up to do such a detestable thing. (Jeremiah 32:35) And in Ecclesiastes 9:5, 6 and 10 it points that the dead are conscious of nothing at all, and that the only punishment for those who sinned, no matter the sin is just death. When Jesus was referring to Gehenna, which was a garbage dump outside Jerusalem, he was trying to draw the point that the destruction was total, not that they will forever burn in torment.
The only other "punishment" for those that make an enemy of god is their names being taken out of the book of life, or lose their chance for a resurrection as refered to in many places, but the best one to use here is Acts 24:15, since it points out that even if you sin you will get a second chance at life in the "resurrection of the unrightous".
