As you can see, the Bible doesn’t talk about silent prayer specifically. Whether you pray in silence or out loud, I believe that God hears both kind of prayers. As long as your prayers are earnest, He will hear and answer them.
Who is the leader of the Protestant Church?
Martin Luther, often called the father of Protestantism, fundamentally changed the Christian world through his force of will and new ideas. He tried passionately to reform the Catholic Church.