A buddha is someone who finds freedom in good fortune and bad. Such is his power that karma can't hold him. No matter what kind of karma, a buddha transforms it. Heaven and hell are nothing to him. But the awareness of a mortal is dim compared to that of a buddha, who penetrates everything, inside and out.
His words are bonds, his oaths are oracles; his love sincere, his thoughts immaculate; his tears pure messengers sent from his heart; his heart as far from fraud, as heaven from earth
Heaven is eternal and Earth everlasting. They can be eternal and everlasting because they do not exist for themselves, And for this reason can exist forever.
Let me be clear that I'm not God so I can't tell you who is and isn't going to heaven. What I know about my relationship with Christ is that as a believer, I am eternally secure. I gave my heart to Christ and that gift of salvation is irrevocable.