LXX Deut 9:5

οὐχὶ διὰ τὴν δικαιοσύνην σου οὐδὲ διὰ τὴν ὁσιότητα τῆς καρδίας σου σὺ εἰσπορεύῃ κληρονομῆσαι τὴν γῆν αὐτῶν, ἀλλὰ διὰ τὴν ἀσέβειαν τῶν ἐθνῶν τούτων Κύριος ἐξολεθρεύσει αὐτοὺς ἀπὸ προσώπου σου· καὶ ἵνα στήσῃ τὴν διαθήκην αὐτοῦ ἣν ὤμοσεν τοῖς πατράσιν ὑμῶν, τῷ Ἀβραὰμ καὶ τῷ Ἰσαὰκ καὶ τῷ Ἰακώβ.

It is not because of your righteousness or uprightness of heart that you are going in to possess their land, but it is because of their wickedness that the LORD your God is driving out these nations before you, to keep the promise He swore to your fathers, to Abraham, Isaac, and Jacob.