וַיֹּ֣אמֶר שַׁלְּחֵ֔נִי כִּ֥י עָלָ֖ה הַשָּׁ֑חַר וַיֹּ֙אמֶר֙ לֹ֣א אֲשַֽׁלֵּחֲךָ֔ כִּ֖י אִם־בֵּרַכְתָּֽנִי׃
И сказал он: 'Отпусти меня, потому что день наступит.' И сказал он: 'Я не отпущу тебя, если не благословишь меня.'
Reshimot Shiurim
It is clarified from this that the fulfillment of the mitzvah of Kriyat Shema in its primary [sense involves] the fulfillment of accepting the yoke of Heaven, and the berachot of Kriyat Shema correspond to the paragraphs of the Shema, and that they were established to elaborate the intentions within the paragraphs [of the Shema] and that the fulfillment of accepting the yoke of heaven is withen them. It appears [that it is necessary] to add two topics and aspects of "acceptance of the yoke of heaven" of Kriyat Shema and its blessings: A) Accepting the yoke of heaven by mentioning the Uniqueness of Hashem and His Oneness, B) Accepting the yoke of heaven through songs and praises to Hashem. It seems that [when one] says Kriyat Shema of the morning and the evening, one completes the other, that there is a distinction between the fulfillment of "accepting the yoke of heaven" in the Kriyat Shema and its blessing in the morning and the fulfillment of Kriyat Shema and its blessings in the evening. The distinction between them is elaborated from text of the berachot of Kriyat Shema, that [by] the berachot of Kriyat Shema of the morning, we mention the singing of the angels ("and all [of them] opened their mouths...with song and melody...), however, we do not mention this singing in the [blessings] in the evening, [since] there is no singing at night, and this is established [from the fact that] we do not say Hallel except during the day, as it is written "From the rising to the setting of the sun, Hashem's name is to be praised (see Megillah 20b)." And thus we find that the angel said to Yaakov Avinu (Genesis 32:27), "Let me go, for dawn is coming," and Rashi's explanation [there]: " ...and I need to sing during the day," this indicates that precisely during the day the angels sing.
Rashi
and beseeched him When he said to him, “I will not let you go unless you bless me” (Gen. 32:26), and the angel was begging him, “Let me go now. Eventually, the Holy One, blessed be He, will reveal Himself to you in Bethel, and there you will find Him, and there He will speak with us, and He and I will agree with you concerning the blessings that Isaac blessed you.” Now that angel was Esau’s genius, and he was contesting the blessings.
Sforno
וישלח את אחיו, he gave them permission to leave, as when the angel had said to Yaakov (after the wrestling match) שלחני כי עלה השחר, “let me go for dawn has risen.” (32,27) and שלחוני ואלכה לאדוני “let me go, that I may go back to my lord.” (24:56).
Rashi
and the counsel of His messengers One angel said to Jacob (Gen. 32:27), “Israel shall be your name,” and I fulfilled his words. Here too, I will fulfill the counsel of My prophets who say concerning Jerusalem, “It shall be settled.”