Genesis 35:22-24 American Standard Version (ASV)
22 And it came to pass, while Israel dwelt in that land, that Reuben went and lay with Bilhah his father’s concubine: and Israel heard of it.
Now the sons of Jacob were twelve: 23 the sons of Leah: Reuben, Jacob’s first-born, and Simeon, and Levi, and Judah, and Issachar, and Zebulun; 24 the sons of Rachel: Joseph and Benjamin;
Genesis 35:22-24 New International Version (NIV)
22 While Israel was living in that region, Reuben went in and slept with his father’s concubine Bilhah, and Israel heard of it.
Jacob had twelve sons:
23 The sons of Leah:
Reuben the firstborn of Jacob,
Simeon, Levi, Judah, Issachar and Zebulun.
24 The sons of Rachel:
Joseph and Benjamin.