Rashi on Numbers 21:32/רש"י על במדבר כ״א:ל״ב

1וישלח משה לרגל את יעזר AND MOSES SENT TO SPY OUT JAAZER — The spies captured it (as the text goes on to state, “and they captured it”). They said: We will not do as the former spies, for we have confidence in the power of Moses’ prayer to be able to fight against it (Midrash Tanchuma, Chukat 24).