"As he neared Damascus on his journey, suddenly a light from heaven flashed around him. He fell to the ground and heard a voice say to him, “Saul, Saul, why do you persecute me?” “Who are you, Lord?” Saul asked. “I am Jesus, whom you are persecuting,” he replied. “Now get up and go into the city, and you will be told what you must do.” The men traveling with Saul stood there speechless; they heard the sound but did not see anyone. Saul got up from the ground, but when he opened his eyes he could see nothing. So they led him by the hand into Damascus. For three days he was blind, and did not eat or drink anything." (Acts 9:3-9)
That story is about a man who once lived a sad, pathetic, hate-filled life and was later transformed into a powerful man who became an on fire apostle for Jesus Christ. Won't God do it? Anybody can change, anybody can make a difference, and anybody can be used to draw men unto the Lord. Anybody. So it's not for us to say who God will use and who He will not use, because if He used a man named Saul who later became Paul to do the miraculous things he did to draw men to the Lord, then He can use anybody.