Albert Barnes Commentary Revelation 22:7

"And behold, I come quickly. Blessed is he that keepeth the words of the prophecy of this book." — Revelation 22:7 (ASV)

Behold, I come quickly. See Barnes on Revelation 1:3.

The words here used are undoubtedly the words of the Redeemer, although they are apparently repeated by the angel. The meaning is, that they were used by the angel as the words of the Redeemer. See Revelation 22:12-20.

Blessed is he that keepeth the sayings of the prophecy of this book. That receives them as a Divine communication; that makes use of them to comfort himself in the days of darkness, persecution, and trial; and that is obedient to the precepts here enjoined. See Barnes on Revelation 1:3.