Numbers 35:11

35:11 you must then designate some towns as towns of refuge for you, to which a person who has killed someone unintentionally may flee.

Numbers 35:16

35:16 “But if he hits someone with an iron tool so that he dies, ¹  he is a murderer. The murderer must surely be put to death.

Numbers 35:19

35:19 The avenger ²  of blood himself must kill the murderer; when he meets him, he must kill him.

[35:16]  ¹ tn the verb is the preterite of “die.” The sentence has :“if…he strikes him and he dies.” The vav (ו) consecutive is showing the natural result of the blow.

[35:19]  ¹ tn The participle גֹּאֵל (go’el) is the one who protects the family by seeking vengeance for a crime. This is the same verb used for levirate marriages and other related customs.