וַיְהִי֙ כִּֽי־זָקֵ֣ן יִצְחָ֔ק וַתִּכְהֶ֥יןָ עֵינָ֖יו מֵרְאֹ֑ת וַיִּקְרָ֞א אֶת־עֵשָׂ֣ו ׀ בְּנ֣וֹ הַגָּדֹ֗ל וַיֹּ֤אמֶר אֵלָיו֙ בְּנִ֔י וַיֹּ֥אמֶר אֵלָ֖יו הִנֵּֽנִי׃
און עס איז געװען, אַז יצחק איז אַלט געװאָרן, און זײַנע אױגן זײַנען געװאָרן צו טונקל צו זען, האָט ער גערופֿן זײַן עלטערן זון עֵשָׂון, און האָט צו אים געזאָגט: מײַן זון! האָט ער צו אים געזאָגט: דאָ בין איך.
Targum Jonathan
And it was when Izhak was old and his eyes were darkened from seeing,--because when his father was binding him he had seen the Throne of Glory, and from that time his eyes had begun to darken,--that he called Esau his elder son, on the fourteenth of Nisan, and said to him, My son, behold, this night they on high praise the Lord of the world, and the treasures of the dew are opened in it. And he said, Behold, I am.