Our parsha this week retells the story of the Golden Calf and its consequences: Moshe's prayers and the giving of the second set of tablets – describing the time in-between Rosh Hodesh Elul and Yom Kippur.
When Moshe finishes talking about the sin he says
וַיֹּ֨אמֶר ה֜' אֵלַ֗י ק֣וּם רֵ֤ד מַהֵר֙ מִזֶּ֔ה כִּ֚י שִׁחֵ֣ת עַמְּךָ֔ אֲשֶׁ֥ר הוֹצֵ֖אתָ מִמִּצְרָ֑יִם סָ֣רוּ מַהֵ֗ר מִן הַדֶּ֨רֶךְ֙ אֲשֶׁ֣ר צִוִּיתִ֔ם עָשׂ֥וּ לָהֶ֖ם מַסֵּכָֽה… וָאֵ֗פֶן וָֽאֵרֵד֙ מִן הָהָ֔ר וְהָהָ֖ר בֹּעֵ֣ר בָּאֵ֑שׁ וּשְׁנֵי֙ לוּחֹ֣ת הַבְּרִ֔ית עַ֖ל שְׁתֵּ֥י יָדָֽי. וָאֵ֗רֶא וְהִנֵּ֤ה חֲטָאתֶם֙ לַֽהֹ' אֱלֹֽהֵיכֶ֔ם עֲשִׂיתֶ֣ם לָכֶ֔ם עֵ֖גֶל מַסֵּכָ֑ה סַרְתֶּ֣ם מַהֵ֔ר מִן הַדֶּ֕רֶךְ אֲשֶׁר צִוָּ֥ה ה֖' אֶתְכֶֽם.
And the Lord spoke to me [further], saying, "I have seen this people, and, behold, it is a stiffnecked people. Leave Me alone, and I will destroy them and obliterate their name from beneath the heavens, and I will make you into a nation mightier and more numerous than they. So I turned and came down from the mountain, and the mountain was burning with fire, and the two tablets of the covenant were on my two hands. And I saw, and behold, you had sinned against the Lord, your God; you had made yourselves a molten calf; you had deviated quickly from the way which the Lord had commanded you.