כֹּ֤ה אָמַר֙ יְהוָ֣ה צְבָא֔וֹת קִנֵּ֥אתִי לְצִיּ֖וֹן קִנְאָ֣ה גְדוֹלָ֑ה וְחֵמָ֥ה גְדוֹלָ֖ה קִנֵּ֥אתִי לָֽהּ׃
’Thus saith the LORD of hosts: I am jealous for Zion with great jealousy, and I am jealous for her with great fury.
Read Jewish philosophy on Zechariah 8:2: Rambam's Guide for the Perplexed, Saadia Gaon, and classical Jewish philosophical sources, free online.