Two Ways of Being Answered
Tefillah
Not everyone is answered when he falls on his face in prayer, and not everyone is answered when he tears his garments. Moshe and Aharon were answered when they fell on their faces, as it is written, “And Moshe and Aharon fell on their faces” (Bamidbar 14:5). Yehoshua and Calev, by contrast, were answered when they tore their garments.
Source: Taanis 14b