And he who was seated on the throne said, “Behold, I am making all things new.” (Revelation 21:5 ESV)
There is an unfortunate stream of thinking amongst some that this is related exclusively to a change in our physical existence. Some theologians react so strongly against that incomplete understanding that they deny that disability will end someday.
It certainly means an end to disability. But it also means so much more! Emphases in bold are mine:
When God makes all things new, he will make us spiritually and morally as pure as flawless crystal, he will give us a body like the body of his glory, he will renovate all creation to take all futility and evil and pain out of it, and finally he himself will come to us and let us see his face. And so forever and ever we will live with pure hearts and glorious bodies on a new earth in the presence and the glory of our heavenly Father.
John Piper, Behold, I Make All Things New, delivered April 26, 1992