Genesis 30:4

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.

Wherefore she said unto Abraham, Cast out this bondwoman and her son: for the son of this bondwoman shall not be heir with my son, even with Isaac.

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

Then again Abraham took a wife, and her name was Keturah.

And he put the handmaids and their children foremost, and Leah and her children after, and Rachel and Joseph hindermost.

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:

Thus saith the LORD, Behold, I will raise up evil against thee out of thine own house, and I will take thy wives before thine eyes, and give them unto thy neighbor, and he shall lie with thy wives in the sight of this sun.