Jesus spoke about Hell and we should too...
Recently I read an article (written by a Christian) warning Christians not to discuss Hell because it annoys unbelievers and isn't a "necessary" part of the Gospel.
I'm sure Hell can be overemphasized, but I think we're more apt to under-emphasize it because it doesn't fit our false image of an "unconditional" God.
We can debate the necessity of teaching about hell, but we'd only be sharing human opinions. Instead, let's study the only viewpoint that matters: Christ's.
During His earthly ministry, Jesus boldly taught about Hell.* He obviously thinks we should have a healthy fear of eternal damnation.
Popular opinion should never be our test for Truth (John 15:19) and these words of Christ should be a sobering warning:
"Whoever is ashamed of me and my words, the Son of Man will be ashamed of them when he comes in his glory." Luke 9:26
* Some of the Jesus quotes about Hell: Matthew 5:29 Matthew 7:13 Matthew 10:28 Matthew 23:33 Luke 12:4-5 Luke 16:19-31