﴿ وَإِذْ قَتَلْتُمْ نَفْسًۭا فَٱدَّٰرَْٰٔتُمْ فِيهَا ۖ وَٱللَّهُ مُخْرِجٌۭ مَّا كُنتُمْ تَكْتُمُونَ ﴾

“For, O children of Israel, because you had slain a human being and then cast the blame for this [crime] upon one another -although God will bring to light what you would conceals”

Then Allah mentioned the murdered person, saying: (And (remember) when ye slew a man) 'Amil (and disagreed concerning it) concerning his murder (and Allah brought forth that which ye were hiding) thus demonstrating what you hid with regard to his murder.