Joshua 20:5

And if the avenger of blood pursue after him,.... To the city of refuge, whither he is fled, and demand him:

then they shall not deliver the slayer up into his hands; to be slain by him, but shall protect him:

because he smote his neighbour unwittingly, and hated him not beforetime; [See comments on Numbers 35:22],

[See comments on Numbers 35:23], and

[See comments on Deuteronomy 19:6].