Surah Al-Baqarah 2:55

وَإِذْ قُلْتُمْ يَـٰمُوسَىٰ لَن نُّؤْمِنَ لَكَ حَتَّىٰ نَرَى ٱللَّهَ جَهْرَةً فَأَخَذَتْكُمُ ٱلصَّـٰعِقَةُ وَأَنتُمْ تَنظُرُونَ

And [recall] when you said, "O Moses, we will never believe you until we see Allāh outright"; so the thunderbolt took you while you were looking on.

Translation: Saheeh International

Tafsir

And when you said having gone out with Moses to apologise before God for your worship of the calf and having heard what he had said to you; ‘O Moses we will not believe you till we see God openly’ with our own eyes; and the thunderbolt the shout took you and you died while you were beholding what was happening to you.

Excerpt from Tafsir al-Jalalayn, commentary on 2:55, via Quran.com. The reader has the full commentary and 9 more tafsirs.