Beyond its role as a place of refuge, what deeper significance did the 'cities of refuge' hold within the legal and covenantal framework of ancient Israel (Numbers 35:6)?

A They primarily served as a way for the wealthy to avoid punishment for accidental killings. B They demonstrated God's absolute forgiveness, regardless of the severity of the crime committed. C They highlighted the tension between divine justice and mercy, offering a temporary haven while upholding the sanctity of life and the need for atonement. D They were designed to replace the traditional system of blood vengeance, completely eliminating the role of the avenger of blood.