he could not have any doubt as to whom it was his duty to serve. As he had formerly served the father, so now he would serve his son Absalom. In this way he succeeded in completely deceiving Absalom, so that he placed unbounded confidence in him.
Verse 20
After taking possession of the capital of the kingdom, the next thing to do was to form the resolution to take and keep the throne. Absalom therefore turned to Ahithophel, and said, “Give ye counsel what we are to do.” The plural הבוּ (give ye) may be explained on the supposition that the other persons present were addressed as well as Ahithophel, as being capable of giving advice.
Verse 21
Ahithophel gave the following counsel: “Go to thy father's concubines, whom he hath left behind to keep the house (i.e., lie with them: for אל בּוא, compare 2Sa 3:7, etc.); so will all Israel hear that thou hast made thyself stinking with thy father, and the hands of all those who are with thee will strengthen themselves.” This advice was sagacious enough. Lying with the king's concubines was an appropriation of the royal harem, and, as such, a complete usurpation of the throne (see at 2Sa 3:7), which would render any reconciliation between Absalom and his father utterly impossible, and therefore would of necessity instigate the followers of Absalom to maintain his cause with all the greater firmness. This was what Ahithophel hoped to attain through his advice. For unless the breach was too great to be healed, with the affection of David towards his sons, which might in reality be called weakness, it was always a possible thing that he should forgive Absalom; and in that case Ahithophel would be the one to suffer. But under the superintendence of God this advice of Ahithophel was to effect the fulfilment, without any such intention on his part, of the threat held over David in 2Sa 12:8.
Verses 22-23
Absalom had a tent put up on the roof of the king's palace, that his going in to the concubines might be done publicly in the sight of all Israel. For (as the historian adds in 2Sa 16:23 by way of explanation) the counsel of Ahithophel, which he counselled in those days, was like a divine oracle both with David and with Absalom. The words from ועצת to ההם are placed at the commencement absolutely: “and (as for) the counsel of Ahithophel, ... as if one inquired the word of God, so was every counsel of Ahithophel.” The Masoretes have supplied אישׁ as the Keri to ישׁאל. This is
