Dear Rabbi Feiner, How could Chushin have "heard" Yehuda's roar? Chushin was deaf. What Chushin felt was the earth shake or tremble, due to HIS BROTHER'S ROAR. No one roar is the same. Example, a professional singer, no vibration is the same. A diaphragm vibrates differently in each individual, no two voices are the same. Chushan FELT his brother's roar. That's why he came to Ma'aras HaMachpela.