Midrash sur La Genèse 43:16

“If only you were like a brother to me, who suckled the breasts of my mother. I would find you outside; I would kiss you, yet they would not despise me” (Song of Songs 8:1).
“If only you were like a brother to me” – like what brother? Like Cain to Abel? Cain killed Abel, as it is stated: “Cain arose against Abel his brother, and killed him” (Genesis 4:8). Rather, like Ishmael to Isaac? Ishmael hated Isaac. Rather, like Esau to Jacob? But it is stated: “Esau hated Jacob” (Genesis 27:41). Rather, like Joseph’s brothers to Joseph? They hated him, as it is stated: “His brothers were jealous of him” (Genesis 37:11). Like what brother? “One who suckled the breasts of my mother” – that is to say like Joseph to Benjamin, who loved him wholeheartedly, as it is stated: “Joseph saw Benjamin with them” (Genesis 43:16).¹As the story unfolds, the verse states that Joseph wept when he saw Benjamin (Genesis 43:30).
“I would find you outside; I would kiss you”; “outside” – this is the wilderness, which is outside the settled area. “I would kiss you” – regarding two brothers who kissed each other, and these are Moses and Aaron, as it is stated: “He went, and he met him at the mountain of God, and he kissed him” (Exodus 4:27).
“They would not despise me” – Rabbi Pinḥas said: There was an incident involving two siblings, one of whom was in Meron and one in Gush Ḥalav. The house of the one who lived in Meron caught fire. His sister from Gush Ḥalav came and began hugging, embracing, and kissing him, and saying: This does not demean me, as my brother was in dire straits and was delivered from them.

In what lies in the other ark it is written (Exodus 20) "I am the L rd your G d," and of Joseph it is written (Genesis 50:19) "Am I in the place of G d?" In what lies in this ark it is written (Exodus 20) "There shall not be before you any other gods," and of Joseph it is written (Genesis 42:18) "It is G d whom I fear." (Exodus 20) "You shall not take the name of the L rd your G d in vain." And of Joseph it is written (Genesis 42:15) "By the life of Pharaoh," (Joseph not swearing by "the life" of the L rd.) (Exodus 20) "Remember the Sabbath day." Joseph (Genesis 42:16) "slaughter an animal and prepare it," "prepare" alluding to Sabbath eve, it being written here "prepare," and elsewhere (Exodus 16:5) "And it shall be on the sixth day that they shall prepare." (Exodus 20) "Honor your father." Joseph (Genesis 37:13) "And Israel said to Joseph: Are your brothers not grazing (the sheep) in Shechem? Go, and I will send you to them. And he said to him: Here I am" (at your service). Joseph knew that his brothers hated him, but he would not transgress the words of his father. (Exodus 20) "You shall not kill." He did not kill Potiphar (even though he could have.) (Exodus 20) "You shall not commit adultery." He did not commit adultery with the wife of Potiphar. (Exodus 20) "You shall not steal." He did not rob Pharaoh, viz. (Genesis 47:14) "And Joseph collected all of the money, etc." (Exodus 20) "You shall not testify falsely against your neighbor." Joseph did not tell his father what his brothers had done to him. Now does this not follow a fortiori, viz.: If he did not testify (against them) even truthfully, how much more so, falsely! (Exodus 20) "You shall not covet." He did not covet Potiphar's wife.

This is what God said to Israel: My children what do I seek from you? I seek no more than that you love one another, and honor one another, and that you have awe for one another