Musar על קידושין 60:7

The author does not see a duplication in verses 29 and 31 respectively, but views the first verse as addressing itself to removal of impediments to Torah observance, such as the sites of pagan worship still extant in the land of Canaan when the Israelites would invade the land. The words אשר אתה בא שמה לרשתה in verse 29 describe a different reality from the reality referred to by the words לבא לרשת את הארץ in verse 31. The first verse is an introduction to the sources of curse still in that land, whereas the second verse addresses itself to a time when blessings will prevail. At that time there will be all kinds of Heavenly assists, which is not the case when one is guided or driven by the evil urge.