LXX Deut 30:20

ἀγαπᾷν Τύριον τὸν θεόν σου, εἰσακούειν τῆς φωνῆς αὐτοῦ καὶ ἔχεσθαι αὐτοῦ· ὅτι τοῦτο ἡ ζωή σου καὶ ἡ μακρότης τῶν ἡμερῶν σου· τὸ κατοικεῖν σε ἐπὶ τῆς γῆς ἧς ὤμοσεν κύριος τοῖς πατράσιν σου Ἀβραὰμ καὶ Ἰσαὰκ καὶ Ἰακὼβ δοῦναι αὐτοῖς.

and that you may love the LORD your God, obey Him, and hold fast to Him. For He is your life, and He will prolong your life in the land that the LORD swore to give to your fathers, to Abraham, Isaac, and Jacob.”