וּפְדוּיֵ֨י יְהוָ֜ה יְשֻׁב֗וּן וּבָ֤אוּ צִיּוֹן֙ בְּרִנָּ֔ה וְשִׂמְחַ֥ת עוֹלָ֖ם עַל־רֹאשָׁ֑ם שָׂשׂ֤וֹן וְשִׂמְחָה֙ יַשִּׂ֔יגוּ וְנָ֖סוּ יָג֥וֹן וַאֲנָחָֽה׃ (פ)
永恆者所救贖的人必歸回，歡呼歌唱來到錫安，自古的喜樂必在他們頭上；他們必得著歡喜快樂，憂愁和嘆息必都逃離。
Rashi
with joy of days of yore (Heb. שִׂמְחַתעוֹלָם, joy that is from days of yore, which they already experienced on the way of their Exodus from Egypt, “and the Lord was going before them by day” (Ex. 13:21).
Ibn Ezra
And the ransomed, etc. And those that return, will come to Zion with rejoicing and with everlasting joy upon their heads. The head is the principal seat of the soul.11The divine promise of joy and happiness concerns the soul more than the body. According to others the joy will be like a cover over their heads; this explanation is also admissible.