Deuteronomy 19:11
"But if any man hate his neighbour, and lie in wait for him, and rise up against him, and smite him mortally that he die, and fleeth into one of these cities:"
Cross References (ranked by relevance)
Deuteronomy 27:24
Cursed be he that smiteth his neighbour secretly. And all the people shall say, Amen.
Numbers 35:24
Then the congregation shall judge between the slayer and the revenger of blood according to these judgments:
Proverbs 28:17
A man that doeth violence to the blood of any person shall flee to the pit; let no man stay him.
Genesis 9:6
Whoso sheddeth man’s blood, by man shall his blood be shed: for in the image of God made he man.