1)
Why did they say "leave the Mikdash"?
1.
Malbim: A Zar may not enter the Heichal without need. You were Mo'el in Kodesh!
2)
Why did they say "v'Lo Lecha l'Chavod"?
1.
Malbim: Someone proper for Kehunah, it is honor for him from Hashem. One who is not proper for it and takes it by force, it is a disgrace of him ? "u'Vozai Yekalu" (Shmuel I, 2:30).
