In this shiur, we will focus on the blessings and the curses of the Rebuke section at the end of Vayikra: if people will do good, God will get rid of the wild animals in the land. Ramban quotes a midrash to discuss the meaning of limiting or eradicating wild animals from the land. Why does he focus on a miraculous description? It transmits a message that the nature of sin invites death – by wild animals, in this case.
In the Ramban's view, there is a relationship between land, creation and sin – our surroundings reflect our spiritual state.