The verse states: “The jealousy of Ephraim will cease” (Isaiah 11:13) – because Jacob our patriarch believed that Judah had killed Joseph when he brought him the tunic, as it is stated: “He recognized it, and said: My son's tunic, an evil beast devoured him” (Genesis 37:33), and an evil beast is none other than a lion.
Another matter, “he sent Judah before him.” Rabbi Ḥanina son of Rabbi Aḥa, and Rabbi Ḥanina, one said: To arrange a residence for him. And one said: To arrange an academy in which he would teach Torah matters and in which the tribes would study. Know that it is so; when Joseph departed from him, he knew at which chapter that he was teaching him he left him. When Joseph’s brothers came to him and said to him: “Joseph is still alive… his heart was faint [because he did not believe them]” (Genesis 45:26). He remembered at which chapter he left him, and said to himself: I know that it was at the chapter of the beheaded calf [egla arufa] that Joseph left me. He said to them: ‘If you know at what chapter Joseph left me, I will believe you.’ Joseph, too, knew at what chapter he left him. What did Joseph do? He gave them wagons [agalot], as it is stated: “Joseph gave them wagons by Pharaoh’s order” (Genesis 45:21). This is to teach you that everywhere Jacob would settle he would study Torah, just as his fathers would. At this point, the Torah had not been given, but it is written of Abraham: “[Because Abraham heeded My voice,] and he kept My charge, [My commands, My decrees, and My Torahs]” (Genesis 26:5) – from where did Abraham learn the Torah? Rabban Shimon says: His two kidneys became like two jugs of water and they would gush Torah. From where is it derived that it is so? As it is stated: “Even on nights [my kidneys] instruct me” (Psalms 16:7). Rabbi Levi said: He studied Torah on his own, as it is stated: “The dissembler in his heart shall have his fill from his own ways, and a good man shall be satisfied from himself” (Proverbs 14:14). Rabbi Yonatan Sar HaBira said: Abraham knew even the joining of cooked foods, as it is stated: “Because Abraham heeded…” (Genesis 26:5).6The end of the verse mentions “My Torahs,” in plural, implying both the written and oral Torahs. The oral Torah includes even rabbinic laws, like the joining of cooked foods [eruv tavshilin]. The rabbis forbade cooking on a festival day for Shabbat unless one prepares two cooked items for Shabbat before the festival day (see Beitza 15b). How old was Abraham when he recognized his Creator? He recognized his Creator at the age of forty-eight years old. Reish Lakish said: At the age of three years old, as “ekev” is written, the numerical value of ekev, and Abraham lived one hundred and seventy-five years.7The verse states “because [ekev] Abraham heeded My voice…” The numerical value of the word ekev is one hundred and seventy-two, implying that Abraham heeded God’s voice for one hundred and seventy-two years. You learn from this that at age three, he recognized his Creator. He would observe the details of the Torah and would teach his children, as it is stated: “For I have loved him, [so that he will command his children and his household after him and they will observe the way of the Lord]” (Genesis 18:19). The Holy One blessed be He said to him: ‘You taught your children in this world, but in the World to Come, I, in My glory, will teach all of you the Torah,’ as it is stated: “All your children will be students of the Lord” (Isaiah 54:13).