'Innocent Blood' in the Bible

that innocent blood be not shed in the midst of thy land, which Jehovah thy God giveth thee for an inheritance, and so blood be upon thee.

Thine eye shall not pity him, but thou shalt put away the innocent blood from Israel, that it may go well with thee.

Forgive, O Jehovah, thy people Israel, whom thou hast redeemed, and suffer not innocent blood to remain in the midst of thy people Israel. And the blood shall be forgiven them.

So shalt thou put away the innocent blood from the midst of thee, when thou shalt do that which is right in the eyes of Jehovah.