1)
Why does it say "v'Al ha'Aretz"?
1.
Radak: This is like v'El ha'Aretz.
2)
What is the meaning of "Menas'im Es Nafsham"?
1.
Rashi: It is an expression of consolation. They console themselves, and say 'we will return to our land.'
2.
Radak: The false Nevi'im promised that the exiles will return now quickly - "Chlei Veis Hashem Mushavim mi'Bavelah Atah Meherah
3)
Why does it add "you will not return"?
1.
Malbim: Also after Tzidkiyah rebelled, Yechanyah thought that they will return him to his
kingship - also then, you will not return.