Numbers 35:31 YLT

²⁹  'And these things have been to you for a statute of judgment to your generations, in all your dwellings:

³⁰  whoso smiteth a person, by the mouth of witnesses doth 'one' slay the murderer; and one witness doth not testify against a person -- to die.

³¹  'And ye take no atonement for the life of a murderer who 'is' condemned -- to die, for he is certainly put to death;

³²  and ye take no atonement for him to flee unto the city of his refuge, to turn back to dwell in the land, until the death of the priest.

³³  'And ye profane not the land which ye 'are' in, for blood profaneth the land; as to the land, it is not pardoned for blood which is shed in it except by the blood of him who sheddeth it;