Various passages
Rev 21 - 22:5
This symbolically and metaphorically describes heaven — where eternal life is lived. There are several descriptions which probably have symbolic or prophetic meanings, and I don't know the symbolic meanings. If you find parts confusing, don't worry because you aren't alone.
What do we learn about God?
What do we learn about eternal life?
What is heaven like?
Who is there?
What would it be like to live without mourning, or sadness, or pain?
1 John 3:2
We shall be like Jesus in eternal life
2 Peter 3:10,13
looking forward to a new heaven and a new earth
Heb 12:22-23
joyful assembly; we are made perfect