Blessings in the Merit of Tzadikim:
The Medrash Rabbah (1:1) puts together the pasuk of “Vayikroh El Moshe” with the pasuk in Tehillim (103:20): “Bless Hashem, His angels, those mighty in strength, who perform His word, to hearken to the voice of His word.”
Sefer Ach Pri Tevuah explains the connection between these two verses by stating that tzadikim who obey His will create a spiritual arousal in this world, and Hashem does the same in the Upper World. This is why Dovid Hamelech referred to Hashem as his “shadow” (Tehillim 121:5). Just like one’s shadow mimics a person’s actions, Hashem mimics what a tzadik does in this world, so to speak. Therefore, when a tzadik does the will of Hashem, He does the tzadik’s will and fulfills his requests. This is why a tzadik’s tefillos are so powerful.
When the pasuk in Tehillim says that Hashem blesses “His angels”, this is a reference to tzadikim, who obey Him like malachim. Because of them, Hashem provides the entire world with an abundance of bracha. The pasuk then says that the reason He fulfills their will is because they “perform His word” completely and fully.
The Medrash juxtaposes the pasuk in Tehillim to the pasuk in Vayikroh because the reason Hashem called to Moshe was also because he obeyed His words, and He then spoke to Moshe and, in his merit, provided brachos for the world.
