NET
22 While Israel was living in that land, Reuben went to bed with Bilhah, his father’s concubine, and Israel heard about it. Jacob had twelve sons:
Darby
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.
KJV
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 [it]. Now the sons of Jacob were twelve: