1)
Why did he expect Zecharyah to understand?
1.
Malbim: He should understand by himself that the Zayis hints to something anointed with Shemen ha'Mishchah.
Why did he expect Zecharyah to understand?
Malbim: He should understand by himself that the Zayis hints to something anointed with Shemen ha'Mishchah.