Translation:

157. Or lest ye should say: "If the Book had only been sent down to us we should have followed its guidance better than they." Now then hath come unto you a Clear (sign) from your Lord and a guide and a mercy: then who could do more wrong than one who rejecteth Allah's signs and turneth away therefrom? In good time shall We requite those who turn away from Our Signs with a dreadful penalty for their turning away.

Notes (Tafseer)

982. The Qur-an and the life and the teaching of Muhammad the Apostle of God.