Living Forever

The Bible never contradicts itself, you just haven't read the right scriptures and thought about what they are saying.
(John 3:16) “For God loved the world so much that he gave his only-begotten Son, in order that everyone exercising faith in him might not be destroyed but have everlasting life.
Exercising means taking some sort of action. Therefore it requires more than just believing.

(John 10:27-28) My sheep listen to my voice, and I know them, and they follow me. And I give them everlasting life, and they will by no means ever be destroyed, and no one will snatch them out of my hand.
So we have to listen to Jesus Christ and follow him as though we were sheep following a shepherd. We not only have to follow Jesus commandments, but also follow his footsteps in the other things he did. He went from town to town, looking for people to tell the "good news". That good news was that his kingdom would crush the wicked kingdom of Satan, and that the righteous ones would live forever.

(John 17:3) This means everlasting life, their taking in knowledge of you, the only true God, and of the one whom you sent forth, Jesus Christ.
Same thing as above, we have to learn about Jesus and his father Jehovah, who sent Jesus to the earth. The only way to do that is to study the Bible and apply what it tells us in our lives.

(Mark 10:29-30) Jesus said: “Truly I say to YOU men, No one has left house or brothers or sisters or mother or father or children or fields for my sake and for the sake of the good news who will not get a hundredfold now in this period of time, houses and brothers and sisters and mothers and children and fields, with persecutions, and in the coming system of things everlasting life.

(Proverbs 10:30) As for the righteous one, to time indefinite he will not be caused to stagger; but as for the wicked ones, they will not keep residing on the earth.

“The righteous themselves will possess the earth, and they will reside forever upon it.” (Psalm 37:29)

Everlasting life on earth, in a paradise without wicked ones. If you had a house and it was infested with rats, would you burn down the house to get rid of them? No. You would get rid of the rats and keep the house. Same thing with our planet, God intends to get rid of the wicked people and leave the righteous ones on it. Why is that so hard for people to accept?

(Revelation 21:3,4) "With that I heard a loud voice from the throne say: "Look! The tent of God is with mankind, and he will reside with them, and they will be his peoples. And God himself will be with them. And he will wipe out every tear from their eyes, and death will be no more, neither will mourning nor outcry or pain be anymore. The former things have passed away."

These things the Bible is talking about doing away with are all on the earth, not in heaven. So this scripture has to be talking about cleansing the earth of all it's woes, including death. God's original purpose was to have man living on the earth in perfection and happiness. God's plan has not changed and all this will happen. Will you be there to see it?