Musar su Salmi 134:1

It is implied in the Zohar (Parashas Va’eschanan 260a) that the hosts of Heaven look forward to the moment that a Jew will rise from his bed to engage in study and prayer. The proof to this is that when he does so a proclamation goes forth saying, “Behold, bless Hashem all servants of Hashem who stand in the House of Hashem at night” (Tehillim 134:1). Then, when he has risen and gone to the synagogue to beseech his Master they proclaim, “And I will grant you movement among these standing ones” (Zecharyah 3:7). All this is true, however, only if he prays with devotion, pouring out his supplications like a beggar, just as our teacher Moshe did when he said, “And I pleaded with Hashem, etc.” (Devarim 3:23).