Paul says in Romans 10:14-15, "And how are they to hear without someone preaching?" So a man stands up before the people and dares to speak for God. We still believe that God speaks his word through mouthpieces. Pastor Dean Nadasdy writes: "'The word of the Lord came,' write the prophets, and when it came, they hit their knees, they listened, they prayed, and they came out talking.'" So we keep preaching because we believe words from God give life.