Al An’am Ayah 20

ٱلَّذِينَ ءَاتَيْنَـٰهُمُ ٱلْكِتَـٰبَ يَعْرِفُونَهُۥ كَمَا يَعْرِفُونَ أَبْنَآءَهُمُ‌ۘ ٱلَّذِينَ خَسِرُوٓاْ أَنفُسَهُمْ فَهُمْ لَا يُؤْمِنُونَ ٢٠ Those to whom We gave the Scripture recognize him ?to be a true prophet? as they recognize their own children. Those who have ruined themselves will never believe.