Midrash sa Isaias 11:10: Midrash Tanchuma, Midrash Tanchuma Buber, Midrash Tehillim & Bereshit Rabbah

Another comment on And unto him shall be obedience of the peoples be (Gen. 49:10): He is the one for whom the peoples will assemble,²¹The word yikkhat (“obedience”) is taken as if it were related to Hebrew mitkahalim (“assemble”). as is said: The root of Jesse, that standeth for an ensign of the peoples, unto him shall the nations seek (Isa. 11:10).

(Gen. 49:6:) FOR IN THEIR ANGER THEY KILLED A MAN, when they killed Shechem ben Hamor. He said to them: You have afflicted me. Immediately (in vs. 7): CURSED BE THEIR ANGER SO FIERCE. These tribes were unable to dwell together. Rather (ibid., cont.): I WILL DIVIDE THEM IN JACOB AND SCATTER THEM IN ISRAEL. Judah came in and < Jacob > praised him (in vs. 8): YOU, O JUDAH, YOUR BROTHERS SHALL PRAISE (rt.: YDH). In your case, your mother gave praise (rt.: YDH) through your name (Judah, rt.: YDH). When she bore you, she said (in Gen. 29:35): THIS TIME I WILL PRAISE (rt.: YDH) THE LORD; < THEREFORE SHE CALLED HIS NAME JUDAH (rt.: YDH) >. And what did she see to praise in Judah? It is simply that she had given birth to Reuben and foreseen Dathan and Abiram (in Numb. 16:1); so she had not given praise over him (i.e., Reuben). She had given birth to Simeon and foreseen Zimri; so she had not given praise over him. She had given birth to Levi and foreseen Korah; so she had not given praise over him. When she gave birth to Judah, she immediately gave praise (rt.: YDH) over him because he made a confession (rt.: YDH) in the Tamar incident, as stated (in Gen. 38:26): THEN JUDAH GAVE ACKNOWLEDGMENT AND SAID: SHE IS MORE RIGHTEOUS THAN I.⁶¹See Gen. R. 99 (another version):8 (= p. 1279 in the Theodor-Albeck edition). His father said to him: Your mother has given praise (rt.: YDH) over you, and you have made a confession (rt.: YDH). Therefore your brothers shall praise (rt.: YDH) you.⁶²Although the Buber text has “him” here, the correct reading must be “you.” When Isaac blessed Jacob, he had said to him (in Gen. 27:29): AND MAY YOUR MOTHER'S CHILDREN BOW DOWN TO YOU, since he had only one wife. But, since Jacob had four wives, he said (in Gen. 49:8): YOUR FATHER'S CHILDREN < SHALL BOW DOWN TO YOU >.⁶³Gen. R. 66:4. Why shall your brothers praise you? Because all Israel shall be called by your name, < i.e., > Jews.⁶⁴Gen. R. 98(99):6. In Hebrew the word “Jews” is simply the plural of Judah, which in turn has the same root as the Hebrew verb meaning “praise.” And not only that, but out of you is coming the Messiah, who is saving Israel, as stated (in Is. 11:10): BUT A SHOOT SHALL COME FORTH FROM THE STEM OF JESSE….⁶⁵Cf. Romans 15:12; Rev. 5:5.

To the choirmaster. A Psalm of David. May the Lord in your strength rejoice, O king! This refers to what is said in the verse (Isaiah 11:10), "And it shall come to pass on that day, that the root of Jesse, that stands as a banner for the peoples, to him shall the nations seek." Rabbi Chanina said that the Messiah will only come to give the non-Jewish nations the six commandments, such as the sukkah, lulav, and tefillin. But Israel has learned the Torah from the Holy One, blessed be He, as it says (Jeremiah 31:33), "And all your children shall be taught of the Lord." And why is it said (Isaiah 11:10), "And to him shall the nations seek?" Rabbi Chanina said in the name of Rabbi Acha, "What is the meaning of the verse (ibid., v. 10), 'And his resting place shall be of honor?' That the honor from above will be given to the Messiah." May the Lord in your strength rejoice, O king!