13 And he changed his behaviour before them, and feigned himself mad in their hands, and scratched on the doors of the gate, and let his spittle fall down on his beard. 14 And Achish said to his servants, Behold, ye see the man is mad: why did ye bring him to me? 15 have I lack of madmen, that ye have brought this one to rave in my presence? shall this [man] come into my house?
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.