וּפְדוּיֵ֨י יְהוָ֜ה יְשׁוּב֗וּן וּבָ֤אוּ צִיּוֹן֙ בְּרִנָּ֔ה וְשִׂמְחַ֥ת עוֹלָ֖ם עַל־רֹאשָׁ֑ם שָׂשׂ֤וֹן וְשִׂמְחָה֙ יַשִּׂיג֔וּן נָ֖סוּ יָג֥וֹן וַאֲנָחָֽה׃ (ס)
And the ransomed of the LORD shall return, And come with singing unto Zion, And everlasting joy shall be upon their heads; They shall obtain gladness and joy, And sorrow and sighing shall flee away.
Rashi on Isaiah
And the redeemed of the Lord shall return This is an expression of prayer, and it is connected to “Awaken, awaken.”
Ibn Ezra on Isaiah
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)