Rabbi Berekhya said: The congregation of Israel said before the Holy One blessed be He: ‘When You are afflicting me, embittering me, “my beloved is to me”—You become my beloved and you see who is the great man in my midst who can say to the attribute of justice: Enough, and You take him as collateral for me.’ That is what is written: “A cluster of henna [eshkol hakofer].” What is eshkol? A man in whom there is everything [ish shehakol bo]: Bible, Mishna, Talmud, Tosefta, and aggadot. Hakofer, who atones [mekhaper] for the sins of Israel. “In the vineyards of Ein Gedi,” these are the fathers of the world who were drawn after you like kids [gedi] and took the blessings that are the eye of [ein] the world.
Abraham and the Promised Land of Berekhya
Shir HaShirim Rabbah 14:2