1)
What do we learn from "v'Hayah ba'Yom ha'Hu"?
1.
Malbim: When you first come to the land, you yourself will not know if you came to destroy the land, or seize kingship and settle people in the land. On that day, when you are there, you will think what you did not think beforehand ? an evil intent.
2)
What matters will come upon your heart?
1.
Rashi citing Targum Yonasan: Bad thoughts ? to fight against Me.