וַיִּוָּעַ֣ץ הַמֶּ֔לֶךְ וַיַּ֕עַשׂ שְׁנֵ֖י עֶגְלֵ֣י זָהָ֑ב וַיֹּ֣אמֶר אֲלֵהֶ֗ם רַב־לָכֶם֙ מֵעֲל֣וֹת יְרוּשָׁלִַ֔ם הִנֵּ֤ה אֱלֹהֶ֙יךָ֙ יִשְׂרָאֵ֔ל אֲשֶׁ֥ר הֶעֱל֖וּךָ מֵאֶ֥רֶץ מִצְרָֽיִם׃
Whereupon the king took counsel, and made two calves of gold; and he said unto them: ‘Ye have gone up long enough to Jerusalem; behold thy gods, O Israel, which brought thee up out of the land of Egypt.’
Zohar
On the “other side”, the side which is not holy, there is also a king, the one who is called “an old king and a fool” (Eccl. 4, 13), and the priest, who is under him and ministers to him, is On (=aven, nothingness, idolatry); he is alluded to in the verse: “And Ephraim said, Yet I am become rich, I have found me out power”, namely, the celestial unholy power which presided over the act of idolatry committted by Jeroboam (I Kings 12, 28), without which he would not have been able to succeed.