John Wesley on Numbers 23:9

The rocks - Upon which I now stand. I see him - I see the people, according to thy desire, Nu 22:41, but cannot improve that sight to the end for which thou didst design it, to curse them. The people shall dwell alone - This people are of a distinct kind from others, God's peculiar people, separated from all other nations, as in religion and laws, so also in divine protection; and therefore enchantments cannot have that power against them which they have against other persons and people.