King James Version (KJV)
Which covenant he made with Abraham, and his oath unto Isaac;
Modern English
the covenant that he made with Abraham, his sworn promise to Isaac,
Hebrew
אֲשֶׁ֣ר כָּ֭רַת אֶת אַבְרָהָ֑ם וּשְׁבוּעָת֥וֹ לְיִשְׂחָֽק׃
ʾasher karat ʾet ʾabraham vshbvʿatvo lyishḥaq