Genesis 46:12, 26-27

The sons of Judah were Er, Onan, Shelah, Perez, and Zerah (though Er and Onan had died in the land of Canaan). The sons of Perez were Hezron and Hamul.

The total number of Jacob’s direct descendants who went with him to Egypt, not counting his sons’ wives, was sixty-six. In addition, Joseph had two sons who were born in Egypt. So altogether, there were seventy members of Jacob’s family in the land of Egypt.