יְֽהוָ֗ה בְּעָזְּךָ֥ יִשְׂמַח־מֶ֑לֶךְ וּ֝בִישׁ֥וּעָתְךָ֗ מַה־יגיל [יָּ֥גֶל] מְאֹֽד׃
Господи, в силе Твоей царь радуется; и во спасении Твоем, как сильно он торжествует!
Mekhilta DeRabbi Yishmael
(Exodus 15:2) "The L–rd is my strength and my song": "My strength" is Torah, viz. (Psalms 29:11) "The L–rd will give strength to His people," and it is written (Ibid. 99:4) "And (they will praise) the strength of the King, who loves (the Torah of) justice." Variantly: "My strength" is kingship, viz. (Ibid. 21:2) "O L–rd, in Your strength the king rejoices," and (I Samuel 2:10) "And He will give strength to His king."
Mekhilta DeRabbi Yishmael
Variantly: "You have guided them in Your strength" — in the strength of the kingdom of the house of David, who are destined to assume the reign, "Your strength" being kingdom, viz. (Ibid. 21:2) "O L–rd, in Your strength the king will rejoice", and (I Samuel 2:10) "and He will give strength to his king."...
Midrash Tehillim
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!