[19] The revenger of blood himself shall slay the murderer: when he meeteth him, he shall slay him. [20] But if he thrust him of hatred, or hurl at him by laying of wait, that he die; [21] Or in enmity smite him with his hand, that he die: he that smote him shall surely for he is a murderer: the revenger of blood shall slay the murderer, when he meeteth him.