Parallel
Deuteronomy 19:13
Swete's Septuagint · Berean Standard Bible
οὐ φείσεται ὁ ὀφθαλμός σου ἐπ’ αὐτῶ, καὶ καθαριεῖς τὸ αἷμα τὸ ἀναίτιον ἐξ Ἰσραήλ, καὶ εὖ σοι ἱστᾶι.
You must show him no pity. You are to purge from Israel the guilt of shedding innocent blood, that it may go well with you.