Numbers 35:28 KJV
Because he should have remained in the city of his refuge until the death of the high priest: but after the death of the high priest the slayer shall return into the land of his possession.
Numbers 35:26–30 KJV Chapter Context
26
But if the slayer shall at any time come without the border of the city of his refuge, whither he was fled;
27
And the revenger of blood find him without the borders of the city of his refuge, and the revenger of blood kill the slayer; he shall not be guilty of blood:
28
Because he should have remained in the city of his refuge until the death of the high priest: but after the death of the high priest the slayer shall return into the land of his possession.
29
So these things shall be for a statute of judgment unto you throughout your generations in all your dwellings.
30
Whoso killeth any person, the murderer shall be put to death by the mouth of witnesses: but one witness shall not testify against any person to cause him to die.