There's a small story of ten concubines spread across Samuel:
And a messenger came to David, saying, “The hearts of the men of Israel have gone after Absalom.” Then David said to all his servants who were with him at Jerusalem, “Arise, and let us flee, or else there will be no escape for us from Absalom. Go quickly, lest he overtake us quickly and bring down ruin on us and strike the city with the edge of the sword.” And the king's servants said to the king, “Behold, your servants are ready to do whatever my lord the king decides.” So the king went out, and all his household after him. And the king left ten concubines to keep the house. And the king went out, and all the people after him. And they halted at the last house.—2nd Samuel 15:13-17 (ESV)
Then Absalom said to Ahithophel, “Give your counsel. What shall we do?” Ahithophel said to Absalom, “Go in to your father's concubines, whom he has left to keep the house, and all Israel will hear that you have made yourself a stench to your father, and the hands of all who are with you will be strengthened.” So they pitched a tent for Absalom on the roof. And Absalom went in to his father's concubines in the sight of all Israel.—2nd Samuel 16:20-22 (ESV)
And David came to his house at Jerusalem. And the king took the ten concubines whom he had left to care for the house and put them in a house under guard and provided for them, but did not go in to them. So they were shut up until the day of their death, living as if in widowhood.—2nd Samuel 20:3 (ESV)
From a modern perspective, this seems like an unjust punishment of rape victims. But I wonder if from the ancient perspective the king's actions were actually seen as merciful. How ought we to read this vignette?