2 Samuel 20:3
And when David was come to his house to Jerusalem, he took the ten wives his concubines that he had left behind him to keep the house, and put them in ward and ministered all things unto them: but lay no more with them. And so they were enclosed unto the day of the death of them, and lived a widow's life.
2 Samuel 15:16
And the king and all his household departed afoot. And he left behind him ten wives that were his concubines, to keep the house.
2 Samuel 16:21-22
And Ahithophel said unto Absalom, "Get thee in unto thy father's concubines which he hath left to keep the house. For when all Israel shall hear that thou hast made thy father to stink, then shall the hands of all that are with thee be strong."
Genesis 40:3
even in the prison where Joseph was bound.