Answer this: How could Jesus who preached love and forgivness torment people (let us say Jews here ... who grew up Jewish obeying what their parents taught them ... this is their religion ... just as christianity is my religioin).
God's invitation of salvation through faith His Son does not do away with the consequences of those not believing in His Son. The invitation is out there because God so loved the world that He gave His only Son that whosoever believes in Him shall not perish but have eternal life. Take notice of the above where it says "whosoever believes," which also means that whosoever does not believe remains in their sins and is on their way to condemning punishment.
God's love does not nullify His righteous judgment. A person is saved by grace through faith. Anyone's name not found written in the book of life will be thrown into the lake of fire. This is what the great white throne judgment is about, i.e. the judgment of all the unrighteous dead. Jesus also said, "no man comes to the Father but through me." That means that there is no salvation outside of Christ. Consequently, anyone who dies without Jesus remains in their sins and God's wrath rests upon that person.
"Whoever has the Son has life;
whoever does not have the Son of God does not have life." - 1 John 5:12
"Whoever believes in the Son has eternal life,
but whoever rejects the Son will not see life, for God’s wrath remains on them." - John 3:36
They are taught by their parents that this IS the truth. do they go to hell because they obeyed their parents and believed them?
Once an individual comes of age, they should know the truth for themselves, not by what their parents told them. They have to have their own faith. They should be reading the word of God for themselves. Come on! What kind of logic is that? This is about individual choice from being told about Christ and then reading His word for oneself.
For example, my faith did not come from my parents, for they were not believers. God called me when I was 14 years old and that from reading His word and had nothing to with my parents whatsoever. Consequently, faith comes from hearing the message, and the message is heard through the word about Christ. Then you read it for yourself and are convinced if God reveals His Son to you.