(Al-An'aam) 6 : 20
الَّذِينَ آتَيْنَاهُمُ الْكِتَابَ يَعْرِفُونَهُ كَمَا يَعْرِفُونَ أَبْنَاءَهُمُ ۘ الَّذِينَ خَسِرُوا أَنْفُسَهُمْ فَهُمْ لَا يُؤْمِنُونَ
Those to whom We have given the Book recognize Him just like they recognize their sons, those who have lost their soul will never believe.
Those who have received Adhikr which explains everything should know their Lord and soul more than they know their sons. But the Arabic Quran reading Fujjar by hiding and rejecting Adhikr giving preference to bodily and worldly life without considering the soul and Hereafter. It is told in verse 35: 32 that the Fujjar have wronged their soul. And it is told in verses 39: 15; 42: 45, and 66: 6 that these disbelieving wrongdoers have made a loss to their family and themselves. See explanation 2: 146, 254; 6: 12, and 7: 37.