 The sixth seal is the beginning of the Great Tribulation Period. This "great earthquake" will occur in the Jordan River Valley as the antichrist or Islamic leader; with the ten Arab countries launch their attack against Israel. Upon their approach southward, this "great earthquake" will stop this Islamic army from their attempt to completely destroy the nation of Israel. This "great earthquake" will cause a resonance of earthquake shock waves to penetrate throughout the entire earth and create a worldwide domino effect of earthquake activity that will intensify for the next 0 ½ years. These earthquake shock waves will produce a secondary effect: volcanic eruptions on a global scale. 