2 Samuel 20:3
And David came to his house at Jerusalem; and the king took the ten women, concubines, whom he had left to keep the house, and put them in a house of confinement and maintained them, but did not go in to them. So they were shut up unto the day of their death, living in widowhood.
2 Samuel 15:16
And the king went forth, and all his household after him, and the king left ten women, concubines, to keep the house.
2 Samuel 16:21-22
And Ahithophel said to Absalom, Go in to thy father's concubines, whom he has left to keep the house; and all Israel shall hear that thou art become odious with thy father; and the hands of all that are with thee shall be strong.
Genesis 40:3
and he put them in custody into the house of the captain of the life-guard, into the tower-house, into the place where Joseph was imprisoned.