לָשׂ֣וּם ׀ לַאֲבֵלֵ֣י צִיּ֗וֹן לָתֵת֩ לָהֶ֨ם פְּאֵ֜ר תַּ֣חַת אֵ֗פֶר שֶׁ֤מֶן שָׂשׂוֹן֙ תַּ֣חַת אֵ֔בֶל מַעֲטֵ֣ה תְהִלָּ֔ה תַּ֖חַת ר֣וּחַ כֵּהָ֑ה וְקֹרָ֤א לָהֶם֙ אֵילֵ֣י הַצֶּ֔דֶק מַטַּ֥ע יְהוָ֖ה לְהִתְפָּאֵֽר׃
要為錫安悲哀的人安排，賜給他們華冠代替灰燼，喜樂的油代替哀痛，讚美的衣代替消沉的靈；他們要被稱為公義的樹，是永恆者所栽種的，好使他得榮耀。
Rashi
the elms of righteousness Heb. אֵילֵי, an expression of trees (אִילָנוֹת). Comp. (supra 1:29) “of the elms (מֵאֵילִים) that you desired.” This is evidenced by the end of the verse, “the planting of the Lord etc.”
Ibn Ezra
To appoint unto them that mourn for Zion that which the text is going to enumerate2aThe words לתת להם to give unto them, are accordingly a mere repetition of the phrase לשום לאבלי ציון to appoint unto them that mourn for Zion.. Beauty for ashes, the oil of joy for mourning. The mourner does not anoint with oil, as may be gathered from the story of the woman of Tekoa. (2 Sam. 14:2).
Ibn Ezra
כהה Weak.3A. V., Heaviness. It is an adjective of the same root as the verb בהה (Lev. 13:6) which is rendered by some is become dark, but by me hath decreased, as it is contrasted with פׁשהֹ spread.4Comp. I. E. on 42:3, and on Levit. 13:6.