LXX Num 25:18

ὅτι ἐχθραίνουσιν αὐτοὶ ὑμῖν ἐν δολιότητι, ὅσα; δολιοῦσιν ὑμᾶς διὰ Φογώρ, κα διὰ Χασβεὶ θυγατέρα ἄρχοντος Μαδιὰν ἀδελφὴν αὐτῶν, τὴν πεπληγυῖαν ἐν τῆ ἡμέρᾳ τῆς πληγῆς διὰ Φογώρ.

For they assailed you deceitfully when they seduced you in the matter of Peor and their sister Cozbi, the daughter of the Midianite leader, the woman who was killed on the day the plague came because of Peor.”