The responsibility of the Kohen Gadol[1]
…והשיבו אתו העדה אל-עיר מקלטו אשר-נס שמה וישב בה עד-מות הכהן הגדל וגו’
…The congregation shall return [the accidental killer] to his city of refuge (where he initially fled to), and he shall dwell there until the death of the Kohen Gadol…[2]
The Torah mandates that someone who, G-d forbid, accidentally kills another, be sentenced to exile. They have to leave their family and friends and dwell in one of the cities of refuge that the Torah delineates. It serves both as protection from the deceased’s relatives (who may want to take revenge)[3], and as a form of atonement[4]. The Torah does give a time limit to this exile. Although, it’s seemingly incongruous to the crime committed. The accidental killer must stay in their city of refuge until the death of the Kohen Gadol. Only then can they return to their home. Why did the Torah make his freedom dependent on the Kohen Gadol’s death?