so that anyone who kills another unintentionally or accidentally may flee there. These will be your refuge from the avenger of blood.
KJV
That the slayer that killeth [any] person unawares [and] unwittingly may flee thither: and they shall be your refuge from the avenger of blood.
ASV
that the manslayer that killeth any person unwittingly and unawares may flee thither: and they shall be unto you for a refuge from the avenger of blood.