Verse 21. "Go in unto thy father's concubines" - It may be remembered that David left ten of them behind to take care of the house, see chap. xv. 16. Ahithophel advised this infernal measure, in order to prevent the possibility of a reconciliation between David and his son; thus was the prophecy to Nathan fulfilled, chap. xii. 11. And this was probably transacted in the very same place where David's eye took the adulterous view of Bath-sheba; see chap. xi. 2.
The wives of the