1 Chronicles 2:1-4

The sons of Israel were Reuben, Simeon, Levi, Judah, Issachar, Zebulun, Dan, Joseph, Benjamin, Naphtali, Gad, and Asher. Judah had three sons from Bathshua, a Canaanite woman. Their names were Er, Onan, and Shelah. But the LORD saw that the oldest son, Er, was a wicked man, so he killed him. Later Judah had twin sons from Tamar, his widowed daughter-in-law. Their names were Perez and Zerah. So Judah had five sons in all.