Ulangan 19:19

19:19 you must do to him what he had intended to do to the accused. In this way you will purge ¹  evil from among you.

Ulangan 30:7

30:7 Then the Lord your God will put all these curses on your enemies, on those who hate you and persecute you.

[19:19]  ¹ tn Heb “you will burn out” (בִּעַרְתָּ, bi’arta). Like a cancer, unavenged sin would infect the whole community. It must, therefore, be excised by the purging out of its perpetrators who, presumably, remained unrepentant (cf. Deut 13:6; 17:7, 12; 21:21; 22:21-22, 24; 24:7).