'Blood guiltiness' in the Bible

If the thief be encountered breaking in, and be smitten so that he die, there shall be no blood-guiltiness for him.

If the sun be risen on him, there shall be blood-guiltiness for him; he should have made full restitution: if he had nothing, he would have been sold for his theft.

and the avenger of blood find him outside the limits of his city of refuge, and the avenger of blood kill the manslayer, there shall be no blood-guiltiness upon him;

Deliver me from blood-guiltiness, O God, thou God of my salvation: my tongue shall sing aloud of thy righteousness.