Genesis 35:22 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:

Genesis 16:3 And Sarai Abram's wife took Hagar her maid the Egyptian, after Abram had dwelt ten years in the land of Canaan, and gave her to her husband Abram to be his wife.

Genesis 22:24 And his concubine, whose name was Reumah, she bare also Tebah, and Gaham, and Thahash, and Maachah.

Genesis 25:1 Then again Abraham took a wife, and her name was Keturah.

Genesis 25:6 But unto the sons of the concubines, which Abraham had, Abraham gave gifts, and sent them away from Isaac his son, while he yet lived, eastward, unto the east country.