וּפְדוּיֵ֨י יְהוָ֜ה יְשֻׁב֗וּן וּבָ֤אוּ צִיּוֹן֙ בְּרִנָּ֔ה וְשִׂמְחַ֥ת עוֹלָ֖ם עַל־רֹאשָׁ֑ם שָׂשׂ֤וֹן וְשִׂמְחָה֙ יַשִּׂ֔יגוּ וְנָ֖סוּ יָג֥וֹן וַאֲנָחָֽה׃ (פ)
E os resgatados do SENHOR voltarão; e virão a Sião com júbilo, e alegria eterna haverá sobre as suas cabeças; gozo e alegria alcançarão, e deles fugirá a tristeza e o gemido.
Barukh SheAmar
We shall be joyful (semachim) in the rebuilding of Zion, Your city, and exultant (sasim) in Your service: There are many different words for joy in the Hebrew language. Some suggest that these words each have a slightly different nuance from one another. In this passage, “semachim, joyful” refers to the feeling one has in anticipating some great or happy event while “Sasim” from the word “Sason, exultant” refers to the experience of joy upon witnessing the fulfillment of the event. Israel is joyful in anticipating the rebuilding of the Temple but they will feel a complete sense of exultation upon participating in the Temple service once the Temple is rebuilt. Similarly, in the Shacharit service on Shabbat morning we say, “Semachim bitzaytam vasasim bovo’am,” in the beautiful poem, “El Adon.” We are told that the heavenly host are joyful in going out (to fulfill God’s will) and exultant when they come back (having fulfilled God’s will.)
Da'at Zekenim
ומשה יקח את האהל, “meanwhile Moses took his own tent far beyond the limits of the camp of the Israelites;” according to our author the word אהל here is a reference to the ornaments-jewelry that had been removed from the male Israelites, and which Moses merited as pointed out in the Talmud tractate Shabbat folio 88, where Rabbi Shimon ben Lakish is quoted as proving from Scripture that at some time in the future this jewelry will be restored to their original owners. He based this on Isaiah 35,10. This is also why we read after Moses’ return from the Mountain that his face was shining so brilliantly that the people were blinded until he covered his forehead with a kind of veil. (Exodus 34,9) An alternate interpretation: the word אהל here is closely related to אור, light, where we find the word בהלו נרו עלי ראשי, “when His lamp shone over my head;” (Job 29.3)
Ibn Ezra
And the redeemed, etc. The connection between this and the preceding verses is: Awake, O arm, etc., and then, when this is the case, the redeemed of the Lord shall return. I have explained this already (35:10)