1)
Why does it say "va'Yakhel" regarding Yisrael, and "va'Ye'esof" regarding the Leviyim?
1.
Malbim: Makhil is via an announcement. The Leviyim came on their own, and David gathered them to speak to them.
Why does it say "va'Yakhel" regarding Yisrael, and "va'Ye'esof" regarding the Leviyim?
Malbim: Makhil is via an announcement. The Leviyim came on their own, and David gathered them to speak to them.