1)
What is the meaning of "Im be'Emes"?
1.
Rashi: If I am proper for kingship.
2.
Malbim: The Atad was unsure if they truly intend to make him king.
2)
Why did it say "take shelter in my shade"? The Atad is the lowest, and gives no shade!
1.
Malbim: If you abandon your attributes and come to lower yourself to dwell under me in a low place, and my thorns will protect you...
3)
Why did it say "Tetzei Esh v'Sochal..."?
1.
Malbim: Do not say that I cannot harm you from my low place. The Atad is prone to burn, and the fire will consume the giant trees!