Where is "mi'Tachtiyos"?
Rashi: In back of the wall (in the place where the enemy planned to attack).
Malbim: In back of where the enemy planned to attack, hidden under rocks.
What are "Tzechichim"?
Rashi: They are weapons.
Ibn Ezra, Redak (Yechezkel 24:7): This is like "Tzechi'ach Sela" (the peak ? the highest place).
Why does it repeat "va'A'amid"?
Rashi: We find like this ? "v'Lakachta mi'Meimei ha'Ye'or? ha'Mayim Asher Tikach Min ha'Ye'or", "Ki Hine Oyvecha Hashem Ki Hine Oyvecha Yovedu", "Uri Uri Devorah Uri Uri Daberi Shir", :Lo Lanu Hashem Lo Lanu."
Malbim: The first teaches that he stationed men to lie in ambush. When the enemy comes, they will shoot [arrows] at them. The second teaches that he stationed people visibly opposite the enemy, arranged by families. Both of them were armed, ready for war.
