Deuteronomy 21:9

9 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.

Deuteronomy 21:9 Meaning and Commentary

Deuteronomy 21:9

So shalt thou put away the guilt of innocent blood from among
you
Which otherwise, the person not being found out, and brought to just punishment for it, would devolve upon the whole. Aben Ezra interprets it the punishment of innocent blood, which, by the above method being taken, would not be inflicted on them:

when thou shalt do that which is right in the sight of the Lord;
as it was to observe this law concerning the beheading of the heifer, with all the rites and ceremonies belonging to it here enjoined; as well as every other command, statute, and ordinance of the Lord, which are all right to be done, ( Psalms 19:8 ) .

Deuteronomy 21:9 In-Context

7 and they shall answer and say, Our hands have not shed this blood, neither have our eyes seen it.

8 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.

9 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.

10 When thou goest forth to battle against thine enemies, and Jehovah thy God delivereth them into thy hands, and thou carriest them away captive,

11 and seest among the captives a beautiful woman, and thou hast a desire unto her, and wouldest take her to thee to wife;