Say (O Muhammad SAW) "O people of the Scripture (Jews and Christians)! You have nothing (as regards guidance) till you act according to the Taurat (Torah), the Injeel (Gospel), and what has (now) been sent down to you from your Lord (the Quran)." Verily, that which has been sent down to you (Muhammad SAW) from your Lord increases in many of them their obstinate rebellion and disbelief. So be not sorrowful over the people who disbelieve.