1)
What is the meaning of "va'Yishar"?
1.
Radak: (It was proper in his eyes.) It is written with only one Yud; the Yud of the root is omitted.
2.
Malbim: Even though the matter itself was not proper in his eyes, for it is not the way of war, it was proper in his eyes due to what he will get through it, to marry the king's daughter.
2)
What is the meaning of "v'Lo Mal'u ha'Yamim"?
1.
Rashi: Sha'ul set a time for David to bring 100 foreskins. David did not wait for the time to finish; he brought them early.
