I will smite them with the pestilence— See Exodus 9:15; Exodus 9:35 where a similar transaction is expressed in a similar manner. It appears from Numbers 14:15 that Moses understood this denunciation of the pestilence as importing a general destruction of the people.
Related Commentaries of Numbers 14:12
Numbers 14:12
12 I will smite them with the pestilence, and disinherit them, and will make of thee a greater nation and mightier than they.