Shofetim 19:29-30

Orthodox Jewish Bible

²⁹ And when he was come into his bais, he took a ma’akhelet (knife), and laid hold on his pilegesh, and divided her, together with her atzmot, into twelve pieces, and sent her into all the territory of Yisroel.

³⁰ And it was so, that all that saw it said, There was no such deed done nor seen from the yom that the Bnei Yisroel came up out of Eretz Mitzrayim unto this day; give ye heed unto it, make up your minds [about the punishment], and speak.