John the Apostle
Revelation 21:7ESV·traditional attribution

The one who conquers will have this heritage, and I will be his God and he will be my son.

Matthew Henry Presbyterian @wholebiblehenry

We have here a more general account of the happiness of the church of God in the future state, by which it seems most safe to understand the heavenly state. I. A new world now opens to our view (Rev 21:1): I saw a new heaven and a new earth; that is, a new universe; for we suppose the world to be made up of heaven and earth.

Commenting on Revelation 21:1-8

John Gill Reformed Baptist @doctorgill

He that overcometh,.... All spiritual enemies, sin, Satan, and the world, the antichristian beast, his image, mark, and number of his name; who is more than a conqueror through Christ; one that perseveres to the end, notwithstanding all temptations, trials, and difficulties; See Gill on Rev 2:7, shall inherit all things; the kingdom of Christ in the new Jerusalem state, and all things in it...

Albert Barnes Presbyterian @notesbybarnes

Verse 7. He that overcometh. . Shall inherit all things. Be an heir of God in all things. . Compare . And I will be his God. That is, for ever. He would be to them all that is properly implied in the name of God; he would bestow upon them all the blessings which it was appropriate for God to bestow. . And he shall be my son.