Things from the unseen realm of the spirit, make their way into the physical world, by speaking words. Your words have power to shape your world, they have already shaped your world, and shape it today. With a heart man believes, with the mouth man confesses to salvation. Death and life are imparted to people through words, because there's a spirit content to it. The word of God has power to change your life. The mixture of meditating and speaking is what causes the word to become alive, and energised in your life.