Genesis 35:22-23 And it came to pass when Israel dwelt in that land, that Reuben went and lay with Bilhah, his father`s concubine; and Israel heard of it. And the sons of Jacob were twelve.

Darby⁽ⁱ⁾ ²² And it came to pass when Israel dwelt in that land, that Reuben went and lay with Bilhah, his father`s concubine; and Israel heard of it. And the sons of Jacob were twelve. ²³ The sons of Leah: Reuben -- Jacob`s firstborn -- and Simeon, and Levi, and Judah, and Issachar, and Zebulun.