Shemot 32:7

וידבר AND [THE LORD] SAID — This term דבר when not followed by a word of the root אמר implies censorious speech, as (Genesis 42:7) “And he spake (וידבר) roughly (קשות) unto them”. לך רד GO, GO DOWN from your high position; I have given you distinction only for their sake! (Berakhot 32a). At that moment Moses was excommunicated by a decree of the heavenly court (Midrash Tanchuma, Ki Tisa 22). שחת עמך THY PEOPLE HAVE CORRUPTED THEMSELVES — It does not say the people have corrupted but “thy” people — the mixed multitude whom you received of your own accord and accepted as proselytes without consulting Me. You thought it a good thing that proselytes should be attached to the Shechina — now they have corrupted themselves and have corrupted others (Exodus Rabbah 42:6).

וַיְדַבֵּ֥ר יְהֹוָ֖ה אֶל־מֹשֶׁ֑ה לֶךְ־רֵ֕ד כִּ֚י שִׁחֵ֣ת עַמְּךָ֔ אֲשֶׁ֥ר הֶעֱלֵ֖יתָ מֵאֶ֥רֶץ מִצְרָֽיִם׃

And the Lord said to Moshe, Go, get thee down; for thy people, which thou broughtest up out of the land of Miżrayim, have become corrupt: