'Blood' in the Bible

Then if anyone goes out of your house into the street, his blood will be on his head, we will not be responsible; but if any damage comes to anyone in the house, his blood will be on our heads.

So that any man who in error and without design has taken the life of another, may go in flight to them: and they will be safe places for you from him who has the right of punishment for blood.

These were the towns marked out for all the children of Israel and for the man from a strange country living among them, so that anyone causing the death of another in error, might go in flight there, and not be put to death by him who has the right of punishment for blood till he had come before the meeting of the people.