Surat Al Baqarah (54 -55)

{  وَإِذْ قَالَ مُوسَى لِقَوْمِهِ يَاقَوْمِ إِنَّكُمْ ظَلَمْتُمْ أَنْفُسَكُمْ بِاتِّخَاذِكُمُ الْعِجْلَ فَتُوبُوا إِلَى بَارِئِكُمْ فَاقْتُلُوا أَنْفُسَكُمْ ذَلِكُمْ خَيْرٌ لَكُمْ عِنْدَ بَارِئِكُمْ فَتَابَ عَلَيْكُمْ إِنَّهُ هُوَ التَّوَّابُ الرَّحِيمُ  } [البقرة: 54]

54- Remember when Moses said to the Children of Israel who worshipped the calf: You have committed a terrible offense and a major sin when you worshipped the calf as a god other than Allah. There is nothing to make you repent but to kill one another. So, the innocent may kill the criminal for it was the most suitable punishment for your bad souls, your cruel hearts, and your perverted natures. Perhaps, that would be repentance for your awful sin and a painful reminder so that you may not commit it again. Then Allah's Mercy encompassed you and He forgave you because He accepts the sincere repentance from His Servants out of His mercy.

{ وَإِذْ قُلْتُمْ يَا مُوسَى لَن نُّؤْمِنَ لَكَ حَتَّى نَرَى اللَّهَ جَهْرَةً فَأَخَذَتْكُمُ الصَّاعِقَةُ وَأَنتُمْ تَنظُرُونَ } [البقرة:  55]

55- Then you said to your Prophet Moses: We refuse to believe until we see Allah with our naked eyes. That was something impossible to achieve for you or for anyone of the like. Therefore, a powerful shriek came down upon them from the sky because of their terrible stubbornness and because they asked for the impossible, causing you to die while looking at one another.