Shemot 32:18-32

And he said, It is not the voice of them that shout for gevurah, neither is it the voice of them that cry of chalushah; but the noise of them that sing that I hear. And it came to pass, as soon as he came nigh unto the machaneh, that he saw the Egel, and the mecholot (dancing); and the anger of Moshe burned hot, and he threw the Luchot out of his hands, and broke them at the foot of HaHar. And he took the Egel which they had made, and burned it in the eish, and ground it to powder, and scattered it upon the mayim, and made the Bnei Yisroel drink of it. And Moshe said unto Aharon, What did this people unto thee, that thou hast brought so chata'ah gedolah upon them? And Aharon said, Let not the anger of adoni burn hot; thou knowest HaAm, that they are prone to rah (evil). For they said unto me, Make for us elohim, which shall go before us; for as for this Moshe, the ish that brought us up out of Eretz Mitzrayim, we know not what is become of him. And I said unto them, Whosoever hath any zahav, let them remove it. So they gave it me; then I cast it into the eish, and there came out this Egel. And when Moshe saw that HaAm were exposed; (for Aharon had exposed them to derision among their enemies;) Then Moshe stood in the sha'ar of the machaneh, and said, Who is on HASHEMʼs side? Let him rally unto me. And all the Bnei Levi gathered themselves together unto him. And he said unto them, Thus saith HASHEM Elohei Yisroel, Put every man his cherev by his side, and go in and out from sha'ar to sha'ar throughout the machaneh, and slay every man his brother, and every man his companion, and every man his neighbor. And the Bnei Levi did according to the word of Moshe; and there fell of HaAm that day about three thousand men. For Moshe had said, Consecrate yourselves today to HASHEM, even every man against his ben, and against his brother; that He may bestow upon you a brocha this day. And it came to pass on the next day, that Moshe said unto HaAm, Ye have sinned a chata'ah gedolah; and now I will go up unto HASHEM; perhaps I can make kapporah for your chattat. And Moshe returned unto HASHEM, and said, Oh, this people have sinned a chata'ah gedolah, and have made for themselves elohei zahav. Yet now, if Thou wilt forgive their chattat but if not, blot me, now, out of Thy Sefer which Thou hast written.