God told them that the day they eat from that fruits they shall die and the very day that they ate from the fruits they died (because none of them spent up to 1000 years on earth and the bible says that 1000 years is like a day in the sight of God)and God gave them other curses but HELL FIRE was not there and our God can never lie (Numbers 23 :19 says God is not a Man that he should lie)so where did people get the HELL FIRE.If God would throw them into hellfire after their death,would he not have told them definitely, He would have told them.If anybody should go to hellfire as people wrongly misinterpre the bible,then Eve should be the first to go then followed by Adam.Before they eat the fruit there was no death,they were to leave forever like ANGELS,since there was no death then,that also implies that there was no hellfire so WHEN DID GOD CREATE HELL FIRE.

God told them that they would go back to where they were.So where was Adam before,He was in a state of non -existence,he was dust and when he died, he went back to the state of non-existentence(dust).He is not in hellfire,he is dust,simple.We all die because we came from Adam both the generation before Noah and after Noah,the curses of Adam is in all of us either we accept Jesus or not,We will all die, that is first death,first death applies to everyone except some that will still be alive when Jesus comes but If we accept Jesus then we will be resurrected and those that do not accept him we not be resurrected(that is second death).Only those that died in Christ will be resurrected,not everybody