LXX Deut 6:25

καὶ ἐλέη· μοσύνη ἔσται ἡμῖν ἐὰν φυλασσώμεθα ποιεῖν πάσας τὰς ἐντολὰς ταύτας ἐναντίον κυρίου τοῦ θεοῦ ἡμῶν, καθὰ ἐνετείλατο ἡμῖν Κύριος. δὲ εἰσαγάγῃ σε κύριος ὁ θεός σου εἰς τὴν γῆν εἰς ἢν εἰσ’· VII

And if we are careful to observe every one of these commandments before the LORD our God, as He has commanded us, then that will be our righteousness.”