21:10-15 God's persecuted people have often found better usage from Philistines than from Israelites. David had reason to put confidence in Achish, yet he began to be afraid. His conduct was degrading, and discovered wavering in his faith and courage. The more simply we depend on God, and obey him, the more comfortably and surely we shall walk through this troublesome world.Have I need of madmen?.... Or fools, do I want them? have not I enough of them already at my court? I want wise men, and not fools and madmen. The Jews say (w) that the wife and daughter of Achish were mad; that while David was playing the fool and madman without, they were acting the same part within; so that Achish had enough of that sort of diversion, if it was to be reckoned such; as it was according to the taste of some persons, who used, as in later so in earlier times, to keep fools in their houses to make them sport; but Achish had enough of that, and too much, at least needed no more:

that ye have brought this fellow to play the madman in my presence? or act the part of a fool before me:

shall this fellow come into mine house? court or palace, and have a post there; you need be in no pain about it; he is neither agreeable to me, nor fit for any; and therefore Achish drove him away as a fool or madman, instead of imprisoning him as an enemy, or taking away his life; see the title of the thirty fourth psalm, Psalm 34:1.

(w) Midrash Tillim apud Abarbinel. in loc.