Imagine hidden in a simpler exterior a secret receptacle wherein the most precious treasure is deposited - there is a spring which has to be pressed, but the spring is hidden, and the pressure must have a certain strength, so that an accidental pressure would not be sufficient. So likewise is the hope of eternity hidden in man's inmost parts, and affliction is the pressure. When it presses the hidden spring, and strongly enough, then the contents appear in all their glory.