Odes 9:73

ὅρκον ὃν ὤμοσεν πρὸς Ἀβραὰμ τὸν πατέρα ἡμῶν, τοῦ δοῦναι ἡμῖν ἀφόβως ἐκ χειρὸς τῶν ἐχθρῶν ἡμῶν ῥυσθέντας λατρεύειν αὐτῷ

Swete's Septuagint