I believe mainly because of what God has done for me. I have seen the miraculous. I have experienced God's forgiveness, I read His word daily and I have a personal relationship with Him. What has he done for me? Everything! I am who I am because of Him. I have what I have because of Him. I do what I do because I know that others may only see Him in me initially.
He cannot, but he can certainly hear what we say and rest assured that he reacts to what we say, especially when we are determined to do Kingdom work and make a bold declaration to do so. He hears us and attempts to impede us.