5. And he that sat upon the throne said, Behold, I make all things new. And he said unto me, Write: for these words are faithful and true.--21:5.
He who sat on the throne gave this command which the angel communicated to John, and in a parenthetical phrase John referred to the original command given to him by Christ in chapter 1:19. The Seer was ready to do what he had been commanded to do at the beginning; and they were here attested to be faithful and true words; it was in the character of swearing to the truthfulness of what John was about to write, a form of an oath in affirmation of veracity. It was before the visions were received that the voice of chapter 1 had prompted John to record the things which would be heard and seen.
It was the same voice which had first commanded him to write which now was heard to say: Behold, I make all things new. This same expression has been used to distinguish spiritual Israel from fleshly Israel (2 Corinthians 5:17); and that phrase was employed here in distinction of the new heaven and new earth from the old system of Judaism.
With the fall of the old Jerusalem, the destruction of its theocracy, the termination of the Jewish state, and the removal of the last vestige of Judaism, a new order would prevail under new surroundings.