Passage
For I protest vnto euery man that heareth the words of the prophecie of this booke, If any man shall adde vnto these things, God shall adde vnto him the plagues, that are written in this booke:
For I protest vnto euery man that heareth the words of the prophecie of this booke, If any man shall adde vnto these things, God shall adde vnto him the plagues, that are written in this booke:
Revelation 22:16 I Iesus haue sent mine Angell, to testifie vnto you these things in the Churches: I am the root and the generation of Dauid, and the bright morning starre.
Revelation 22:17 And the Spirit and the bride say, Come. And let him that heareth, say, Come: and let him that is a thirst, come: and let whosoeuer will, take of the water of life freely.
Revelation 22:18 For I protest vnto euery man that heareth the words of the prophecie of this booke, If any man shall adde vnto these things, God shall adde vnto him the plagues, that are written in this booke:
Revelation 22:19 And if any man shall diminish of the wordes of the booke of this prophecie, God shall take away his part out of the Booke of life, and out of the holie citie, and from those things which are written in this booke.
Revelation 22:20 He which testifieth these things, saith, Surely, I come quickly. Amen. Euen so, come Lord Iesus.
The verse centers on "protest", "vnto", "euery", "heareth", "words", "prophecie", "booke", and "shall". It is saying that the verse draws attention to "protest" and "vnto", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 17's "And the Spirit and the bride say..." into verse 19's "And if any man shall diminish of...", so "protest" and "vnto" belong inside that flow. In Revelation context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "protest" and "vnto" with trust shaped by these words, not by a vague optimism outside the passage.