The Spirit and the bride say, “Come.” Let anyone who hears this say, “Come.” Let anyone who is thirsty come. Let anyone who desires drink freely from the water of life.
And I solemnly declare to everyone who hears the words of prophecy written in this book:

If anyone ADDS "anything" (not of the Spirit, not true, speculations) to what is written here, God will add to that person "the plagues" described in this book. (Great Tribulation)
And if anyone REMOVES any of the words (warnings, consequences and rewards) from this book of prophecy, God will remove that person’s "SHARE in the Tree of Life" and in "the holy city" (The New Jerusalem) that are described in this book. (Revelation 22:17-19)