New American Standard Bible (NASB)
1 Samuel 21
10 Then David arose and fled that day from Saul, and went to Achish king of Gath.
11 But the servants of Achish said to him, "Is this not David the king of the land? Did they not sing of this one as they danced, saying, ’Saul has slain his thousands, And David his ten thousands’?"
12 David took these words to heart and greatly feared Achish king of Gath.
13 So he disguised his sanity before them, and acted insanely in their hands, and scribbled on the doors of the gate, and let his saliva run down into his beard.
14 Then Achish said to his servants, "Behold, you see the man behaving as a madman. Why do you bring him to me?
15 Do I lack madmen, that you have brought this one to act the madman in my presence? Shall this one come into my house?"
1 Samuel 22
1 So David departed from there and escaped to the cave of Adullam; and when his brothers and all his father’s household heard of it, they went down there to him.
2 Everyone who was in distress, and everyone who was in debt, and everyone who was discontented gathered to him; and he became captain over them. Now there were about four hundred men with him.
3 And David went from there to Mizpah of Moab; and he said to the king of Moab, "Please let my father and my mother come and stay with you until I know what God will do for me."
4 Then he left them with the king of Moab; and they stayed with him all the time that David was in the stronghold.
5 The prophet Gad said to David, "Do not stay in the stronghold; depart, and go into the land of Judah." So David departed and went into the forest of Hereth.