Genesis 9:5-6

9:5 For your lifeblood I will surely exact punishment, from every living creature I will exact punishment. From each person I will exact punishment for the life of the individual since the man was his relative.

9:6 “Whoever sheds human blood,

by other humans

must his blood be shed;

for in God’s image

God has made humankind.”

Numbers 35:31

35:31 Moreover, you must not accept a ransom for the life of a murderer who is guilty of death; he must surely be put to death.

Numbers 35:33

35:33 “You must not pollute the land where you live, for blood defiles the land, and the land cannot be cleansed of the blood that is shed there, except by the blood of the person who shed it.