What does the Bible teach about heaven? In his commentary on Mark, Danny Akin includes some great lists to help provide clarity.

What Will Heaven Be Like?

1. Heaven is being prepared by Christ Himself – And if I go and prepare a place for you, I will come again and will take you to myself, that where I am you may be also (John 14:3).
2. Heaven is only for those who have been born again – Jesus answered him, “Truly, truly, I say to you, unless one is born again he cannot see the kingdom of God” (John 3:3).
3. Heaven is described as a glorious city – The wall was built of jasper, while the city was pure gold, like clear glass (Rev. 21:18).
4. Heaven will shine with and be lighted by God’s glory – having the glory of God, its radiance like a most rare jewel, like a jasper, clear as crystal…And the city has no need of sun or moon to shine on it, for the glory of God gives it light, and its lamp is the Lamb…And night will be no more. They will need no light of lamp or sun, for the Lord God will be their light, and they will reign forever and ever (Rev. 21:11, 23; 22:5).
5. Heaven’s gates will never be shut – and its gates will never be shut by day—and there will be no night there (Rev. 21:25).
6. Heaven has the water of life for everlasting life – Then the angel showed me the river of the water of life, bright as crystal, flowing from the throne of God and of the Lamb (Rev. 22:1).
7. Heaven has the tree of life for abundant life – He who has an ear, let him hear what the Spirit says to the churches. To the one who conquers I will grant to eat of the tree of life, which is in the paradise of God (Rev. 2:7). And if anyone takes away from the words of the book of this prophecy, God will take away his share in the tree of life and in the holy city, which are described in this book (Rev. 22:19).
8. Heaven has the throne of God at its center – At once I was in the Spirit, and behold, a throne stood in heaven, with one seated on the throne (Rev. 4:2). Then the angel showed me the river of the water of life, bright as crystal, flowing from the throne of God and of the Lamb through the middle of the street of the city; also, on either side of the river, the tree of life with its twelve kinds of fruit, yielding its fruit each month. The leaves of the tree were for the healing of the nations (Rev. 22:1-2).
9. Heaven is a place of holiness – But nothing unclean will ever enter it, nor anyone who does what is detestable or false, but only those who are written in the Lamb’s book of life (Rev. 21:27).
10. Heaven is beautiful – Out of Zion, the perfection of beauty, God shines forth (Ps. 50:2).
11. Heaven is a place of unity – as a plan for the fullness of time, to unite all things in him, things in heaven and things on earth (Eph. 1:10).
12. Heaven is a place of perfection – but when the perfect comes, the partial will pass away (1 Cor. 13:10).
13. Heaven is joyful – You make known to me the path of life; in your presence there is fullness of joy; at your right hand are pleasures forevermore (Ps. 16:11).
14. Heaven is a place for all eternity – that whoever believes in him may have eternal life (John 3:15). Surely goodness and mercy shall follow me all the days of my life, and I shall dwell in the house of the Lord forever (Ps. 23:6).
15. Heaven has no night – and its gates will never be shut by day—and there will be no night there (Rev. 21:25). And night will be no more. They will need no light of lamp or sun, for the Lord God will be their light, and they will reign forever and ever (Rev. 22:5).
16. Heaven is filled with singing – Sing, O heavens, for the LORD has done it (Isa. 44:23). And they were singing a new song before the throne (Rev. 14:3). And they sing the song of Moses, the servant of God, and the song of the Lamb (Rev. 15:3).
17. Heaven is a place of wonderful service – Therefore they are before the throne of God, and serve him day and night in his temple and he who sits on the throne will shelter them with his presence (Rev. 7:15). No longer will there be anything accursed, but the throne of God and of the Lamb will be in it, and his servants will worship him (Rev. 22:3).

What Will Our Bodies Be Like?

1. They will be recognizable – For now we see in a mirror dimly, but then face to face. Now I know in part; then I shall know fully, even as I have been fully known (1 Cor. 13:12) [For more info on this, check out this article].
2. They will be like Christ’s body (glorified) – Beloved, we are God’s children now, and what we will be has not yet appeared; but we know that when he appears we shall be like him, because we shall see him as he is (1 John 3:2).
3. They will not be limited by space – And their eyes were opened, and they recognized him. And he vanished from their sight (Luke 24:31). On the evening of that day, the first day of the week, the doors being locked where the disciples were for fear of the Jews, Jesus came and stood among them and said to them, “Peace be with you” (John 20:19). Eight days later, his disciples were inside again, and Thomas was with them. Although the doors were locked, Jesus came and stood among them and said, “Peace be with you” (John 20:26).
4. They will be eternal – For we know that if the tent that is our earthly home is destroyed, we have a building from God, a house not made with hands, eternal in the heavens. For in this tent we groan, longing to put on our heavenly dwelling, if indeed by putting it on we may not be found naked. For while we are still in this tent, we groan, being burdened—not that we would be unclothed, but that we would be further clothed, so that what is mortal may be swallowed up by life. He who has prepared us for this very thing is God, who has given us the Spirit as a guarantee (2 Cor. 5:1-5).
5. They will be glorious – For I consider that the sufferings of this present time are not worth comparing with the glory that is to be revealed to us (Rom. 8:18). It is sown in dishonor; it is raised in glory. It is sown in weakness; it is raised in power (1 Cor. 15:43).
6. They will not have pain – He will wipe away every tear from their eyes, and death shall be no more, neither shall there be mourning, nor crying, nor pain anymore, for the former things have passed away” (Rev. 21:4).
7. They will not die – The last enemy to be destroyed is death (1 Cor. 15:26). He will wipe away every tear from their eyes, and death shall be no more, neither shall there be mourning, nor crying, nor pain anymore, for the former things have passed away” (Rev. 21:4).
8. They will not hunger or thirst – They shall hunger no more, neither thirst anymore; the sun shall not strike them, nor any scorching heat (Rev. 7:16).
9. They will not sin – But nothing unclean will ever enter it, nor anyone who does what is detestable or false, but only those who are written in the Lamb’s book of life (Rev. 21:27).