this earth will be burned up. God will create a new spiritual heaven and earth fit for Him to live in
That is true.
Jesus said He went away to prepare a place for the saints,so that where He is at,the saints may be there also,so the earth is not going to be refurbished,for it will pass away,along with the host of heaven.Jesus is not going to refurbish the earth,but He went away from the earth to prepare a place.
The earth,and the heaven,have been tainted with sin,so they shall have to pass away,and God will create a new heaven,and a new earth,where sin has never been,and sin will never be.
Psa 63:8 My soul followeth hard after thee: thy right hand upholdeth me.
Psa 63:9 But those that seek my soul, to destroy it, shall go into the lower parts of the earth.
Hell is in the lower parts of the earth.
Rev 20:14 And death and hell were cast into the lake of fire. This is the second death.
The earth will be cast in to the lake of fire.
2Pe 3:10 But the day of the Lord will come as a thief in the night; in the which the heavens shall pass away with a great noise, and the elements shall melt with fervent heat, the earth also and the works that are therein shall be burned up.
The heavens shall pass away with fervent heat,and the earth shall be burned up,for they have been tainted with sin,and all sin must be purged with fire,and the New Jerusalem will be a place where sin has never been,and sin will never be.
Rev 21:1 And I saw a new heaven and a new earth: for the first heaven and the first earth were passed away; and there was no more sea.
Isa 65:17 For, behold, I create new heavens and a new earth: and the former shall not be remembered, nor come into mind.
Isa 66:22 For as the new heavens and the new earth, which I will make, shall remain before me, saith the LORD, so shall your seed and your name remain.
Joh 14:1 Let not your heart be troubled: ye believe in God, believe also in me.
Joh 14:2 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.
Joh 14:3 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.
Jesus went away to prepare a place,so this earth will be gone one day,after the millennial reign of Christ.