Do not seal up: The angel expands John's initial instruction to Write on a scroll (Revelation 1:11) and warns against limiting its communication. Although some things are sealed, God does not reveal everything (compare Revelation 10:4). What has been written must be shared so people understand the message's seriousness and that the time is near (see Revelation 1:1, 3; 22:6–7; compare Daniel 12:4).