1)
From what death does He save them?
1.
Radak: It is death in war.
2.
Malbim: It is from the afflicter who afflicts them.
2)
How will He save them from hunger?
1.
Radak: He will arrange that they will be satiated, amidst the hungry.
2.
Malbim: This is like the episode in which Yisrael (in Shomron) wearied from hunger, and also the enemy came against them, and Hashem saved them from both of them (Melachim II, 6:24-7:16).