1)
What is the significance of "Shuvu Elai? v'Ashuv Aleichem"?
1.
Malbim: From now and onwards, Hashem will not send to them Nevi'im warning them to repent. After the last Nevi'im (Chagai, Zecharyah and Malachi), Nevu'ah ceased. They must strive by themselves to repent.
