1)
Why does it say "Eretz Nasnah Yevulah"?
1.
Radak: Then, the land will give its produce. Rain had been withheld due to Aveiros, and the land did not give its produce. However, at the time of Ge'ulah, Resha'im will be eradicated and those who remain will be without sin, so the land will always give its produce.
2)
Why does it say "Elokim Elokeinu"?
1.
Malbim: Elokim will give this Brachah to us, for He is Elokeinu, who supervises over us individually.
