Genesis 35:23-26

23 The sons of Leah: Reuben (Jacob's firstborn), Simeon, Levi, Judah, Issachar, and Zebulun.
24 The sons of Rachel: Joseph and Benjamin.
25 The sons of Bilhah, Rachel's maid: Dan and Naphtali.
26 The sons of Zilpah, Leah's maid: Gad and Asher. These were the sons of Jacob who were born to him in Paddan-aram.