לִכְרָת־ל֣וֹ אֲרָזִ֔ים וַיִּקַּ֤ח תִּרְזָה֙ וְאַלּ֔וֹן וַיְאַמֶּץ־ל֖וֹ בַּעֲצֵי־יָ֑עַר נָטַ֥ע אֹ֖רֶן וְגֶ֥שֶׁם יְגַדֵּֽל׃
He heweth him down cedars, And taketh the ilex and the oak, And strengtheneth for himself one among the trees of the forest; He planteth a bay-tree, and the rain doth nourish it.
Ibn Ezra on Isaiah
He heweth him down cedars, etc. Some cut the idols out of cedar wood, others of. תרזה cypress. It is the name of a tree.
Rashi on Isaiah
and he reinforced it with forest trees He makes for it types of reinforcements, either for strength or for beauty, with types of trees, one different from the other in their appearance.