1)
Why does it mention Sha'ul and Avner separately from the nation?
1.
Malbim: They were separated from the others.
2)
What is "ba'Ma'agal"?
1.
Radak: It is the encampment; they camped in an Igul (circle).
3)
What is the meaning of "Chonim"?
1.
Malbim: Some were lying down [to sleep], and some were sitting.