וַיַּ֜עַל עַֽל־הַמִּזְבֵּ֣חַ ׀ אֲשֶׁר־עָשָׂ֣ה בְּבֵֽית־אֵ֗ל בַּחֲמִשָּׁ֨ה עָשָׂ֥ר יוֹם֙ בַּחֹ֣דֶשׁ הַשְּׁמִינִ֔י בַּחֹ֖דֶשׁ אֲשֶׁר־בָּדָ֣א מלבד [מִלִּבּ֑וֹ] וַיַּ֤עַשׂ חָג֙ לִבְנֵ֣י יִשְׂרָאֵ֔ל וַיַּ֥עַל עַל־הַמִּזְבֵּ֖חַ לְהַקְטִֽיר׃ (פ)
八月十五日，就是他自己心裡捏造出來的那個月，他上了他在伯特利所造的祭壇。他為以色列人定了節期，又上祭壇燒香。
Rashi
Of the eighth month. He expounded to them that this was the month of the harvest, and was, therefore, the proper time for the festival to be.
Rashi
He thought up out of his own heart. An expression of falsehood, controver, in O.F.