Sometime I heard some people say that they don't believe in rebirth or heaven or hell as their religion doesn't say such a thing. They are saying this is their first & the last birth and after that they vanish… but they have no idea what is the cause for it… let's be realistic… it's time to awake now… I'm glad I'm writing these things for true human beings who don't like to sleep and dream anymore… so let's find out what exactly is happening according to the cause & effect theory.
Each religion clearly says that those who do good will lead to the heaven after their death and those who do evil things will leads to the hell after their death. So if a person is intelligent enough to understand this little theory, he / she understand that this is not the one & only birth of their existence.
They have reasons to be part of this existence as another form & being in heaven or hell. So what we talk here will helpful for a true human being to follow their religion or belief more clearly and wisely as exactly as the way your teacher explained you to be.
Let's have a look, how few main religion scriptures describe about these various kinds of existence.
"Everyone will exist eternally either in heaven or hell" - (Daniel 12:2,3)
"Heaven or hell is determined by whether a person believes in Christ alone to save them" - (John 3:16, 36, etc.)
"Truly, truly, I say to you, unless one is born again he cannot see the kingdom of God." - (John 3:3)
"If I have told you people about earthly things and you don't believe, how will you believe if I tell you about heavenly things?" - (John 3:12)
There are many quotes about hell & heaven in the holy bible. I thought I better mentioned them in the specific section which we talk about these realms. It's up to you to believe these or not. If you can't believe them, the lost is all yours and those who believe in these things will guide them for the betterment.
"One who has taken his birth is sure to die, and after death one is sure to take birth again. Therefore, in the unavoidable discharge of your duty, you should not lament." - (2.27)
"Surely (as for) those whom the angels cause to die while they are unjust to their souls, they shall say: In what state were you? They shall say: We were weak in the earth. They shall say: Was not Allah's earth spacious, so that you should have migrated therein? So these it is whose abode is hell, and it is an evil resort" - (4.97)
"Whoever comes to his Lord (being) guilty, for him is surely hell; he shall not die therein, nor shall he live." - (20:74)
The second verse actually describes a deep meaning. For me it express the meaning which those who do bad surely end in Hell where they can't die or live as they have to go through endless suffering according to the things they did as human beings.
But people believe according to their knowledge, NOT through the wisdom. So the knowledge teaches them & describes the god according to their view and they behave & treat accordingly.
we can talk about these things in specific sections. For now all I want to say is that all these main religions describe about the unseen existence plains as well as the rebirth in those plains according to the things we do as human beings.