כִּשְׁמֹ֤עַ עֵשָׂו֙ אֶת־דִּבְרֵ֣י אָבִ֔יו וַיִּצְעַ֣ק צְעָקָ֔ה גְּדֹלָ֥ה וּמָרָ֖ה עַד־מְאֹ֑ד וַיֹּ֣אמֶר לְאָבִ֔יו בָּרֲכֵ֥נִי גַם־אָ֖נִי אָבִֽי׃
װי עֵשָׂו האָט געהערט די װערטער פֿון זײַן פֿאָטער, אַזױ האָט ער אױסגעשריען אַ זײער גרױס און ביטער געשרײ, און ער האָט געזאָגט צו זײַן פֿאָטער: בענטש מיך אױך, מײַן פֿאָטער.
Radak
כשמוע...גם אני, “I am also your son, no less than he is.” The letter א in the word אני has the vowel kametz, although it does not signify a comma or something similar, as it is intended to stress the word “I.” We find a similar construction in 31,52 אם אני לא אעבור אליך, where we also would not have expected the kametz instead of the vowel patach. There too, the kametz is used to provide emphasis on the word “I.” Another example of the use of the kametz in the word אני as a means of emphasizing the speaker is Psalms 89,28 אף-אני בכור אתנהו, “I will appoint him firstborn.”
Haamek Davar
Have you not saved a blessing for me. Eisov understood that he could not receive the same blessing that his brother had received, but he was hoping for a similar one.
Tze'enah Ure'enah
“He burst into wild and bitter sobbing” [27:34]. He cried out a great and bitter cry. “He said to his father, bless me too, father” [27:34]. Esau said to his father, bless me also. Isaac said: your brother came with wisdom and took away your blessing. Esau said: he is called Jacob because he has deceived me twice. He also took away my birthright. Esau said: have you not put aside a blessing for me also? Isaac said to Esau: I have made Jacob a lord over you and all of his brothers should be servants to him. I have also given him grain and wine. What should I do further? Esau said: do you have only one blessing? He cried greatly and Isaac blessed him.76Rashi, Genesis, 27:35–36.