1)
Why did David leave Eretz Pelishtim?
1.
Malbim: He feared lest Sha'ul pursue him.
2.
He could not act sane in Eretz Pelishtim, for then Achish would want to kill him! (PF)
2)
Why did David ask only for his parents?
1.
Radak: His brothers went with him. His parents feared lest Sha'ul kill them.
2.
Malbim: David and his men would be in the fortress. It is dangerous there at a time of war.
