וַיֹּ֨אמֶר עֵשָׂ֜ו אֶל־אָבִ֗יו הַֽבְרָכָ֨ה אַחַ֤ת הִֽוא־לְךָ֙ אָבִ֔י בָּרֲכֵ֥נִי גַם־אָ֖נִי אָבִ֑י וַיִּשָּׂ֥א עֵשָׂ֛ו קֹל֖וֹ וַיֵּֽבְךְּ׃
And Esau said unto his father: ‘Hast thou but one blessing, my father? bless me, even me also, O my father.’ And Esau lifted up his voice, and wept.
Read kabbalistic (mystical) interpretation of Genesis 27:38: and classical mystical sources.