(1) Now Jacob was settled in the land where his father had sojourned, the land of Canaan. (2) This, then, is the line of Jacob: At seventeen years of age, Joseph tended the flocks with his brothers, as a helper to the sons of his father’s wives Bilhah and Zilpah. And Joseph brought bad reports of them to their father. (3) Now Israel loved Joseph best of all his sons, for he was the child of his old age; and he had made him an ornamented tunic. (4) And when his brothers saw that their father loved him more than any of his brothers, they hated him so that they could not speak a friendly word to him.

(1) וישב יעקב AND JACOB SETTLED — After it (Scripture) has described to you the settlements of Esau and his descendants in a brief manner — since they were not distinguished and important enough that it should be related in detail how they settled down and that there should be given an account of their wars and how they drove out the Horites (see Deuteronomy 2:12) — it explains clearly and at length the settlements made by Jacob and his descendants and all the events which brought these about, because these are regarded by the Omnipresent as of sufficient importance to speak of them at length. Thus, too, you will find that in the case of the ten generations from Adam to Noah it states “So-and-so begat so-and-so”, but when it reaches Noah it deals with him at length. Similarly, of the ten generations from Noah to Abraham it gives but a brief account, but when it comes to Abraham it speaks of him more fully. It may be compared to the case of a jewel that falls into the sand: a man searches in the sand, sifts it in a sieve until he finds the jewel. When he has found it he throws away the pebbles and keeps the jewel (Midrash Tanchuma, Vayeshev 1). Another explanation of וישב יעקב AND JACOB SETTLED: The camels of a flax dealer once came into a city laden with flax. A blacksmith asked in wonder where all that flax could be stored, and a clever fellow answered him, “A single spark caused by your bellows can burn up all of it.” “So, too, when Jacob saw (heard of) all these chiefs whose names are written above he said wonderingly, “Who can conquer all these?” What is written after the names of these chieftains? — and in this may be found the reply to Jacob’s question: These are the generations of Jacob — Joseph. For it is written (Obadiah 1:18) “And the house of Jacob shall be a fire and the house of Joseph a flame, and the house of Esau, for straw: one spark issuing from Joseph will burn up all of these (descendants of Esau) (Genesis Rabbah 84:5). The passage beginning “Another explanation” is found in an old Rashi text.

(1) כאשר ילדה רחל את יוסף WHEN RACHEL HAD BORN JOSEPH — after the birth of him who was to become Esau’s adversary (Genesis Rabbah 73:7) — as it is said (Obadiah 1:18) “And the house of Jacob shall be a fire, and the house of Joseph a flame and the house of Esau for straw“. Fire (Jacob) that has no flame (Joseph) has no effect at a distance. Therefore, when Joseph was born Jacob put his trust in the Holy Blessed One and wished to return home (Obadiah 1:18).

"And it was when Rachel had given birth to Joseph..." (Gen 30:25)

When Joseph was born, an adversary to Esau was born. As it says (in Gen 30:25), "And Jacob said to Lavan, 'Send me away, and I will go back to my own homeland.'"

As Rabbi Pinchas said in the name of Rabbi Shmuel bar Nachman, we have a tradition that Esau will only fall at the hands of the sons of Rachel. As it says (in Jeremiah 42:20), "Surely the shepherd boys will drag them away.." Why are they called 'shepherd boys'? Because they will be the youngest of the tribes. 

When did "the Lord speak"? In Numbers 24:19: "A victor emerges from Jacob..."

(15) He took up his theme, and said: Word of Balaam son of Beor, Word of the man whose eye is true, (16) Word of him who hears God’s speech, Who obtains knowledge from the Most High, And beholds visions from the Almighty, Prostrate, but with eyes unveiled: (17) What I see for them is not yet, What I behold will not be soon: A star rises from Jacob, A scepter comes forth from Israel; It smashes the brow of Moab, The foundation of all children of Seth. (18) Edom becomes a possession, Yea, Seir a possession of its enemies; But Israel is triumphant. (19) A victor issues from Jacob To wipe out what is left of the city.

The verse states: “The vision of Obadiah. So says the Lord God concerning Edom: We have heard a message from the Lord, and an ambassador is sent among the nations: Arise, and let us rise up against her in battle” (Obadiah 1:1). The Gemara asks: What is different, i.e., what is the reason, that specifically Obadiah prophesied concerning Edom? ...

Efrayim Miksha’a, a student of Rabbi Meir, said in the name of Rabbi Meir: Obadiah was an Edomite convert.

As the saying goes: From the forest comes the ax.