1)
Why does it say "ha'Nosarim"?
1.
Radak: Shishak Melech Egypt took the storehouses (14:25-26); he did not take everything.
2)
Why did he send to Ben Hadad?
1.
'Rashi' (Divrei ha'Yamim II, 15:29), Malbim (ibid. 16:2): Melech Yisrael and Melech Aram had made a Bris to fight Asa. Malbim - also in the days of Achaz, Aram and Efrayim joined against Yehudah.
