'Innocent Blood' in the Bible

Ye shall not oppress the stranger, the orphan and the widow, and innocent blood ye shall not pour out in this place, and after other gods ye shall not go, for evil to you;

Thus said Jehovah, Do ye judgment and justice, and deliver him taken by force, from the hand of him oppressing: ye shall not be violent, ye shall not oppress the stranger, the orphan, and the widow, and ye shall not pour but innocent blood in this place.

But knowing, ye shall know that if ye put me to death, that ye give innocent blood upon yourselves and upon this city, and to her inhabitants: for in truth Jehovah sent me to you to speak in your ears all these words.