LXX Num 25:5

καὶ εἶπεν Μωυσῆς ταῖς φυλαῖς ᾿Ισραήλ Αποκτείνατε ἕκαστος τὸν οἰκεῖον αὐτοῦ τὸν τετελεσμένον τῷ ΒεελΦεγώρ.

So Moses told the judges of Israel, “Each of you must kill all of his men who have joined in worshiping Baal of Peor.”