Numbers 26:20-22
26:20 And the Judahites by their families were: from Shelah, the family of the Shelahites; from Perez, the family of the Perezites; and from Zerah, the family of the Zerahites.
26:21 And the Perezites were: from Hezron, the family of the Hezronites; from Hamul, the family of the Hamulites.
26:22 These were the families of Judah according to those numbered of them, 76,500.