The seven seals of the scroll, opened by the Lamb in Revelation 5-8. The scroll is sealed with seven seals (Rev 5:1); the search for one worthy to open it fails (5:2-4); only the Lamb who was slain is found worthy (5:5-9). The Lamb then opens each seal in turn (chs. 6-8:1). The first four seals release the famous Four Horsemen: white (conquest), red (war), black (famine), pale (death — Greek chloros, sickly green-gray). The fifth seal reveals the souls of the martyrs under the altar crying How long?; the sixth brings cosmic upheaval (sun darkened, moon blood-red, stars falling, heaven departing as a scroll); the seventh produces the silence in heaven for half an hour before the seven trumpet-judgments begin. Interpretations vary: historicist (each seal a phase of church history), preterist (fulfilled in the first century, especially AD 70), futurist (still to come, often in a final tribulation), idealist (recurring patterns throughout the church age). The MOOP Dictionary holds the futurist-with-historic-applicability reading as the most exegetically defensible.