G-D is described as the one who provides us with shelter: "G-D is my [sela], my rock (Psalm 18:3)."  Rav Soloveitchik explains this verse from the perspective of the Bedouin shepherd, who clings to the rock for shade.  In the intense heat of the desert, the rock casts a shadow offering shelter from the burning sun.   "G-D is the shade in which one finds shelter and peace."   The word "rock" does allude to Hashem’s hardness and toughness for that would denigrate Him.   Instead, the reference is to the constancy of Hashem’s protection. The rock, because it does not move, offers us a "touchstone"; we are able to connect to Hashem at all times and in all circumstances.   This security comforts us as we navigate the difficult days of our exile.