Deuteronomy 19:12

19:12 The elders of his own city must send for him and remove him from there to deliver him over to the blood avenger to die.

Deuteronomy 31:5

31:5 The Lord will deliver them over to you and you will do to them according to the whole commandment I have given you.

tn The גֹאֵל הַדָּם (goel haddam, “avenger of blood”) would ordinarily be a member of the victim’s family who, after due process of law, was invited to initiate the process of execution (cf. Num 35:16-28). See R. Hubbard, NIDOTTE 1:789-94.