Mat. 6:19-21 -  "Do not store up for yourselves treasures on earth, where moth and rust destroy, and where thieves break in and steal. But store up for yourselves treasures in heaven, where moth and rust do not destroy, and where thieves do not break in and steal. For where your treasure is, there your heart will be also.

Mat. 22:29-30 -  Jesus replied, "You are in error because you do not know the Scriptures or the power of God. At the resurrection people will neither marry nor be given in marriage; they will be like the angels in heaven.

John 3:10-13 -  "You are Israel's teacher," said Jesus, "and do you not understand these things? I tell you the truth, we speak of what we know, and we testify to what we have seen, but still you people do not accept our testimony. I have spoken to you of earthly things and you do not believe; how then will you believe if I speak of heavenly things? No one has ever gone into heaven except the one who came from heaven—the Son of Man.

John 14:2-3 -  In my Father's house are many mansions: if it were not so, I would have told you. I go to prepare a place for you. And if I go and prepare a place for you, I will come again, and receive you unto myself; that where I am, there ye may be also. (KJV)

1 Cor. 2:9 - However, as it is written:

"No eye has seen,
no ear has heard,
no mind has conceived
what God has prepared for those who love him"—           

Philip. 3:21 - who, by the power that enables him to bring everything under his control, will transform our lowly bodies so that they will be like his glorious body.

Rev. 2:7 - He who has an ear, let him hear what the Spirit says to the churches. To him who overcomes, I will give the right to eat from the tree of life, which is in the paradise of God.

Rev. 2:17 - He who has an ear, let him hear what the Spirit says to the churches. To him who overcomes, I will give some of the hidden manna. I will also give him a white stone with a new name written on it, known only to him who receives it.

Rev. 2:26-29 - To him who overcomes and does my will to the end, I will give authority over the nations— 'He will rule them with an iron scepter; he will dash them to pieces like pottery'— just as I have received authority from my Father. I will also give him the morning star. He who has an ear, let him hear what the Spirit says to the churches.

Rev. 3:4-6 - Yet you have a few people in Sardis who have not soiled their clothes. They will walk with me, dressed in white, for they are worthy. He who overcomes will, like them, be dressed in white. I will never blot out his name from the book of life, but will acknowledge his name before my Father and his angels. He who has an ear, let him hear what the Spirit says to the churches.

Rev. 3:11-13 - I am coming soon. Hold on to what you have, so that no one will take your crown. Him who overcomes I will make a pillar in the temple of my God. Never again will he leave it. I will write on him the name of my God and the name of the city of my God, the new Jerusalem, which is coming down out of heaven from my God; and I will also write on him my new name. He who has an ear, let him hear what the Spirit says to the churches.

Rev. 3:21-22 - To him who overcomes, I will give the right to sit with me on my throne, just as I overcame and sat down with my Father on his throne. He who has an ear, let him hear what the Spirit says to the churches."

 
Other passages about Heaven:

 
Isa. 65:13-25
1 Cor. 15:35-57
Rev. Ch. 4
Rev. 7:13-17
Rev. Ch. 21-22