Charles Ellicott Commentary Revelation 22:10

"And he saith unto me, Seal not up the words of the prophecy of this book; for the time is at hand." — Revelation 22:10 (ASV)

And he says to me . . .—The angel, in contrast to the injunctions given to Daniel (Daniel 12:9–13), instructs the prophet, Seal not the words of the prophecy; the reason is added, for the time is near.

“Such is always the difference between the prophecy of the old and the new dispensation. The one belonged to a preliminary and prefatory state; the other to a completive and final condition. However long the gospel age may have lasted, or may yet continue, it is the last time (1 John 2:18); after it there is no other: then shall the end come” (Matthew 24:14), (Dean Vaughan).