LXX Gen 18:14

μἠ ἀδυνατεῖ παρὰ τῷ ; εἰς τὸν καιρὸν τοῦτον ἀναστρέψω πρὸς σὲ εἰς ὥρας, καὶ ἔσται τῇ Σάρρᾳ υἱός.

Is anything too difficult for the LORD? At the appointed time I will return to you—in about a year—and Sarah will have a son.”