We would like to think that hearing is just a matter of good communication, but we must remember that Satan is the ultimate deceiver, the father of lies. He does all he can to confuse good communication and rob the Word of God of its power by stealing it away from those whose hearts are hard or who are struggling to understand. When communicating the Gospel with those who don't understand, we need to pray for softened hearts and for hearts that desire to know Jesus. He will reveal himself to those who earnestly seek after him. On the other hand, we must guard and protect our own hearts to keep the evil one from hardening them and making the Word of God irrelevant to us.