2 Samuel 20:3
And David came to his house at Jerusalem; and the king took the ten women his concubines, whom he had left to keep the house, and put them in custody, and fed them, but went not in to them. So they were shut up to 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 who were concubines to keep the house.
2 Samuel 16:21-22
And Ahithophel said to Absalom, Go in to thy father's concubines, which he hath left to keep the house; and all Israel shall hear that thou art abhorred by thy father: then shall the hands of all that are with thee be strong.
Genesis 40:3
And he put them in custody in the house of the captain of the guard, into the prison, the place where Joseph was bound.