וַיַּ֨עַן חַגַּ֜י וַיֹּ֗אמֶר כֵּ֣ן הָֽעָם־הַ֠זֶּה וְכֵן־הַגּ֨וֹי הַזֶּ֤ה לְפָנַי֙ נְאֻם־יְהוָ֔ה וְכֵ֖ן כָּל־מַעֲשֵׂ֣ה יְדֵיהֶ֑ם וַאֲשֶׁ֥ר יַקְרִ֛יבוּ שָׁ֖ם טָמֵ֥א הֽוּא׃
Then answered Haggai, and said: ‘So is this people, and so is this nation before me, saith the LORD; and so is every work of their hands; and that which they offer there is unclean.
Rashi on Haggai
So is this people Just as you err in this, so do you err in many halachot.
Rashi on Haggai
and whatever they will sacrifice there if they do not put their hearts to learning.