When a person gives tzedakah and envelops himself in middas hachessed, he causes Hashem yisbarach to do chessed with all the upper worlds, all the way down to our own world.... As Am Yisrael behave in this world, that is how they arouse the middos on High.... As the Baal Shem Tov explained, “Hashem is your Shadow” (Tehillim 121:5) implies that just as a shadow mirrors anything one does, so Hashem responds to a person’s behavior by acting in the same way to him and to the entire world....(Kedushas Levi, Purim)

Hashem Mirrors a Person’s Behavior