17:22-29 Ahithophel hanged himself for vexation that his counsel was not followed. That will break a proud man's heart which will not break a humble man's sleep. He thought himself in danger, concluding, that, because his counsel was not followed, Absalom's cause would fail; and to prevent a possible public execution, he does justice upon himself. Thus the breath is stopped, and the head laid low, from which nothing could be expected but mischief. Absalom chased his father. But observe how God sometimes makes up to his people that comfort from strangers, which they are disappointed of in their own families. Our King needs not our help; but he assures us, that what we do for the least of his brethren, who are sick, poor, and destitute, shall be accepted and recompensed as if done to himself

25. Amasa—By the genealogy it appears that this captain stood in the same relation to David as Joab, both being his nephews. Of course, Amasa was Absalom's cousin, and though himself an Israelite, his father was an Ishmaelite (1Ch 2:17).

Nahash—is thought by some to be another name of Jesse, or according to others, the name of Jesse's wife.