Genesis 35:22

And when he was living in that region, Reuben went out, and he slept with Bilhah the concubine of his father, which was not such a small matter as to be hidden from him. Now the sons of Jacob were twelve

Other versions

King James Version

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:

English Standard Version

While Israel lived in that land, Reuben went and lay with Bilhah his father's concubine. And Israel heard of it.Now the sons of Jacob were twelve.

New International Version

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: