TSK · Deuteronomy 19:6

The cities shall be to you for refuge from the avenger, that the manslayer not die, until he stands before the congregation for judgment.

If the avenger of blood pursue after him, then they shall not deliver up the manslayer into his hand; because he struck his neighbor unintentionally, and didn't hate him before.

Only know for certain that, if you put me to death, you will bring innocent blood on yourselves, and on this city, and on its inhabitants; for of a truth Yahweh has sent me to you to speak all these words in your ears.