1)
Why did he say "Az Tatzli'ach"?
1.
Malbim: The primary success depends on this.
2)
Is "Chazak ve'Ematz" a command?
1.
Malbim: Yes ? strengthen yourself 1 , and you will not fear!
1
Malbim (Yehoshua 1:6): Chazak is to arouse your strength. Imutz is strong resolve in the heart to persist in this.


