Parallel
Genesis 17:21
Rahlfs Septuagint (1935) · Berean Standard Bible
τὴν δὲ διαθήκην μου στήσω πρὸς Ισαακ ὃν τέξεταί σοι Σαρρα εἰς τὸν καιρὸν τοῦτον ἐν τῷ ἐνιαυτῷ τῷ ἑτέρῳ
But I will establish My covenant with Isaac, whom Sarah will bear to you at this time next year.”