Numbers 26:19 in the King James Version
The sons of Judah were Er and Onan: and Er and Onan died in the land of Canaan.
Context
18 These are the families of the sons of Gad according to those who were counted of them, forty thousand and five hundred.
19 The sons of Judah: Er and Onan. Er and Onan died in the land of Canaan.
20 The sons of Judah after their families were: of Shelah, the family of the Shelanites; of Perez, the family of the Perezites; of Zerah, the family of the Zerahites.