How long is eternity?
Imagine if a bird can pick up ever grain of sand and speck of dirt from the earth one by one and deliver it to the moon until there was no earth remaining. How long will this take?
Nobody really knows, but it would take a very long time. With this in mind, this length of time is just a very small drop of eternity.
When it comes to eternity, Satan’s greatest strength is to convince people he does not exist; his number one goal is to distract people from salvation in Christ by offering people the world. Many people are so distracted by trying to get the most out of life, and trying to enjoy life in such a way that they are so consumed with it; that it has blinded unbelievers in their minds that they ignore the truth of God. When someone is blinded in their mind, they are unable to see God through the eyes of faith.

With this in mind, when a person dies, it is called separation. It is when the soul becomes separated from the body at death. The soul lives on, but for all those who do not accept Christ as Lord and savior of their lives will die and go to a place called hell forever. For those who do believe and accept Christ as Lord and savior will
go to heaven for all eternity.
2 Cor 4:4 "Satan,...the god of this age has blinded the minds of unbelievers, so that they cannot see the light of the gospel that displays the glory of Christ, who is the image of God."