2 Samuel 3:28-29

3:28 When David later heard about this, he said, “I and my kingdom are forever innocent before the Lord of the shed blood of Abner son of Ner! 3:29 May his blood whirl over the head of Joab and the entire house of his father! May the males of Joab’s house never cease to have someone with a running sore or a skin disease or one who works at the spindle or one who falls by the sword or one who lacks food!”

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.

Deuteronomy 21:1-9

Laws Concerning Unsolved Murder

21:1 If a homicide victim should be found lying in a field in the land the Lord your God is giving you, and no one knows who killed him, 21:2 your elders and judges must go out and measure how far it is to the cities in the vicinity of the corpse. 21:3 Then the elders of the city nearest to the corpse must take from the herd a heifer that has not been worked – that has never pulled with the yoke – 21:4 and bring the heifer down to a wadi with flowing water, to a valley that is neither plowed nor sown. There at the wadi they are to break the heifer’s neck. 21:5 Then the Levitical priests will approach (for the Lord your God has chosen them to serve him and to pronounce blessings in his name, and to decide every judicial verdict) 21:6 and all the elders of that city nearest the corpse must wash their hands over the heifer whose neck was broken in the valley. 21:7 Then they must proclaim, “Our hands have not spilled this blood, nor have we witnessed the crime. 21:8 Do not blame your people Israel whom you redeemed, O Lord, and do not hold them accountable for the bloodshed of an innocent person.” Then atonement will be made for the bloodshed. 21:9 In this manner you will purge out the guilt of innocent blood from among you, for you must do what is right before the Lord.

Deuteronomy 21:1

Laws Concerning Unsolved Murder

21:1 If a homicide victim should be found lying in a field in the land the Lord your God is giving you, and no one knows who killed him,

Deuteronomy 2:33

2:33 the Lord our God delivered him over to us and we struck him down, along with his sons and everyone else.