'Innocent Blood' in the Bible

That innocent blood be not shed in your land, which the LORD your God gives you for an inheritance, and so blood be upon you.

Your eye shall not pity him, but you shall put away the guilt of innocent blood from Israel, that it may go well with you.

Be merciful, O LORD, unto your people Israel, whom you have redeemed, and lay not innocent blood unto the charge of your people Israel. And the blood shall be forgiven them.

So shall you put away the guilt of innocent blood from among you, when you shall do that which is right in the sight of the LORD.