There was a professor of philosophy who was a deeply committed atheist. His primary goal for one required class was to spend the entire semester attempting to prove that God couldn't exist. His students were always afraid to argue with him because of his impeccable logic.
In twenty years, no one had ever stood up. They knew what he was going to do next. He would say,
And every year, he would drop the chalk onto the tile floor of the classroom and it would shatter into a hundred pieces. All of the students would do nothing but stop and stare. Most of the students thought that God couldn't exist. Certainly, a number of Christians had slipped through, but for 20 years, they had been too afraid to stand up.
Well, a few years ago there was a freshman that happened to enroll. He was a Muslim, and had heard the stories about his professor. He was required to take the class for his major, and he was afraid. But for three months that semester, he prayed every morning that he would have the courage to stand up no matter what the professor said, or what the class thought. Nothing they said could ever shatter his faith...he hoped. Finally, the day came.
He proceeded to drop the chalk, but as he did, it slipped out of his fingers, off his shirt cuff, onto the pleat of his pants, down his leg, and off his shoe. As it hit the ground, it simply rolled away unbroken. The professor's jaw dropped as he stared at the chalk. He looked up at the young man, and then ran out of the lecture hall.
The young man, who had stood, proceeded to walk to the front of the room and shared his faith in Islam for the next half hour. 300 students stayed and listened as he told of Allah's love for them and to be the followers of our beloved prophet Mohammed (saw).