Shemot 32:27-29

Orthodox Jewish Bible

²⁷ 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.

²⁸ And the Bnei Levi did according to the word of Moshe; and there fell of HaAm that day about three thousand men.

²⁹ 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.