Verse 21

إِنَّ ٱلَّذِينَ يَكْفُرُونَ بِـَٔايَـٰتِ ٱللَّهِ وَيَقْتُلُونَ ٱلنَّبِيِّـۧنَ بِغَيْرِ حَقٍّ وَيَقْتُلُونَ ٱلَّذِينَ يَأْمُرُونَ بِٱلْقِسْطِ مِنَ ٱلنَّاسِ فَبَشِّرْهُم بِعَذَابٍ أَلِيمٍ

Surely those who reject God’s Signs and kill the prophets unjustly, and murder those people who advocate justice, then give them the news of a most painful suffering.