Midrasz do Liczb 21:31

31 (Numb. 21:31) Thus Israel dwelt in all the cities [in the land of] the Amorites”: [Only] Jazer survived. > (Numb. 21:32) “So Moses sent to spy out Jazer”: These spies were zealous. They said, “We have confidence in the prayer of Moses. [Yet] he has already sent messengers [that were] spies in the past and they brought a catastrophe. But we shall not do so. Rather, we will trust in the Holy One, blessed be He, and make war.” They then did so and slew the Amorites who were in [the city].