Moussar sur Rois 2 12:3

וַיַּ֨עַשׂ יְהוֹאָ֧שׁ הַיָּשָׁ֛ר בְּעֵינֵ֥י יְהוָ֖ה כָּל־יָמָ֑יו אֲשֶׁ֣ר הוֹרָ֔הוּ יְהוֹיָדָ֖ע הַכֹּהֵֽן׃

Joas fit toute sa vie ce qui plaît au Seigneur, conformément aux enseignements que lui avait donnés le prêtre Joïada.

Mesillat Yesharim

For example, we see by Yoash [ben Achazya king of Judah] (Shemot Raba 8:2) who acted good all the days he was taught by his teacher Yehoyada HaKohen. But after the death of Yehoyada, his servants came and began to flatter him and magnify praises of him until they likened him to a god; "Then the king hearkened to them" (Divrei Hayamim II 24:17).

Mesillat Yesharim

This type of fear is not so easy to attain, for it will arise only out of knowledge and thought, [namely] by contemplating G-d's exaltedness, blessed be He, and the lowliness of man. All these things are outgrowths of the intellect which understands and attains insight. This is the fear we described previously in Piety, setting it as the second part of one of the divisions of Piety.