Kolibri is correct, the Bible does not teach eternal and fiery physical torment. The metaphors that Jesus uses to describe the losses sustained by the unwise, the sinful, and people who just aren't paying attention vary, but they have certain meaningful commonalities. To illustrate the fate of errant souls He uses such images as
- Gehenna, the eternally burning trash heap outside of Jerusalem
- Being cut off from the True Vine (Him) and, like all withered, dead branches, thrown in to the fire.
- Being left out in the dark while the Bridegroom and His friends are admitted to the wedding celebration.
On the shallowest, physical level, these seem to be completely different, possibly conflicting images. Until you look at what they have in common.
- Gehenna is outside the walls of the Holy City, Jerusalem, which is itself a symbol of the body of God's teachings. The soul is outcast, cut off from the sacred.
- The souls are cut off from God and are withered and dead, fit for the fire.
- The souls are left out, cut off from the light and life inside the Bridegroom's house.
These are all illustrative of a state of remoteness from God. In fact, Bahá'u'lláh, Prophet Founder of the Bahá'í Faith expresses the idea of "hell" not as a place but as simply remoteness from God.
What are the things that can cause this state? Failing to hear God's word and practice it. In the case of the dead branches that are fit for the fire in John 15, the thing that causes this remoteness from God is failing to obey Christ's commandment. The commandment is, He says, explicitly no less than three times in the complete set of passages, is "that you love one another."
Seems pretty simple, right? But when Christ gives us the Golden Rule in Matthew chapter 7, He makes it pretty clear that this seemingly simply commandment to love our fellow humans and treat them as we would like to be treated is not as simple as it sounds. Here's the passage in context:
If ye then, being evil, know how to give good gifts unto your children, how much more shall your Father who is in Heaven give good things to them that ask Him? Therefore, all things whatsoever ye would that men should do to you, do ye even so to them; for this is the Law and the Prophets. Enter ye in at the strait gate, for wide is the gate and broad is the way that leadeth to destruction, and many there be who go in thereat. Because strait is the gate, and narrow is the way which leadeth unto life, and few there be that find it." (Matthew 7:11-14)
The logic is simple: since God is even a better and more loving Parent than any human, we should therefore emulate him by treating others as we would be treated (which is the Law AND the purpose of the prophets). It is a narrow gate and it leads to life ... and few find it.
So, what torment would be greater, I wonder, than living with hatred, selfishness, miserliness, prejudice, etc. and therefore—by our own lack of ability to follow a central commandment to love—and therefore being cut off from the love of God. And cut off not because He refused to give it, but because we refused to accept it.
Yes, I too, grew up with in churches that taught eternal physical torment. But since our reality is spiritual what sense does that make? Christ certainly doesn't teach it. I encourage you study not just the Gospels, but the writings of "other" faiths (which I have come to believe are the same faith for different times and different peoples) as if you expected them to make sense. Ask yourself what the metaphors and symbols the Prophets used suggest. When I withdrew from the churches I'd been attending and read the Gospel to extract meaning from Christ's words and ministry, I got a whole new view of His purpose. And when I compared what He said to what Krishna, or Buddha or Bahá'u'lláh said, I got a whole new view of life, the universe and everything.
In other words, investigate truth for yourself. Jesus, Himself, warns
"Not every one that saith unto Me, ‘Lord, Lord,’ shall enter into the Kingdom of Heaven, but he that doeth the will of My Father who is in Heaven. Many will say to Me in that Day, ‘Lord, Lord, have we not prophesied in Thy name, and in Thy name have cast out devils, and in Thy name done many wonderful works?’ And then will I profess unto them, ‘I never knew you: depart from Me, ye that work iniquity.’" (Matthew 7:21-23)