13 So right there, while they were looking at him, he pretended to go crazy, pounding his head on the city gate and foaming at the mouth, spit dripping from his beard. 14 Achish took one look at him and said to his servants, "Can't you see he's crazy? Why did you let him in here? 15 Don't you think I have enough crazy people to put up with as it is without adding another? Get him out of here!"
Matthew Henry's Commentary on 1 Samuel 21:13-15
Commentary on 1 Samuel 21:10-15
(Read 1 Samuel 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.