Revelation Chapter Eight finds the seventh seal broken, and the seven trumpets are sounded bringing on the precursors to the total destruction and end of earth as recorded in the sixth seal.  These trumpets take place between the prayers of the martyrs under the altar, which request God to take vengeance on the people of the earth for their blood, and the sixth seal which describes the ultimate and final destruction of earth.  The first four trumpets are earth bound warning shots where one third of things die, while the last three trumpets are the woes or terrors that come upon humankind.  The four plus the three trumpets form the familiar pattern found in Revelation revealing God's perfect and complete number, seven. 

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