Parallel
Genesis 21:2
Rahlfs Septuagint (1935) · Berean Standard Bible
καὶ συλλαβοῦσα ἔτεκεν Σαρρα τῷ Αβρααμ υἱὸν εἰς τὸ γῆρας εἰς τὸν καιρόν καθὰ ἐλάλησεν αὐτῷ κύριος
So Sarah conceived and bore a son to Abraham in his old age, at the very time God had promised.