2 Samuel 20:3

New International Version

When David returned to his palace in Jerusalem, he took the ten concubines he had left to take care of the palace and put them in a house under guard. He provided for them but had no sexual relations with them. They were kept in confinement till the day of their death, living as widows.

Cross References

Genesis 40:3

and put them in custody in the house of the captain of the guard, in the same prison where Joseph was confined.

2 Samuel 15:16

The king set out, with his entire household following him; but he left ten concubines to take care of the palace.

2 Samuel 20:2

So all the men of Israel deserted David to follow Sheba son of Bikri. But the men of Judah stayed by their king all the way from the Jordan to Jerusalem.