In Christian tradition, mountains are symbolic icons that reference the early temple. Whether the ancient temple itself, or a genuine mountain, the idea of safety, or being closer to God, or as a visible symbolism of God, holds certain religious inference. A few Biblical examples: (Exodus 24:12-18, Isaiah 2:1-5 & Micah 4:2 & 7).
Having done some study of mountains as symbols of God (or as things of sacred symbolism) in virtually every religious or cultural belief system, in the many countries of the world (Christian or not), it seems there is some common connection or point of origin. Like the story of the great flood, which appears in so many cultural beliefs and traditions through out the world. And the idea of ritual washings that, likewise, appear as common practice in many countries and religious cultures. Too, the idea of ritual, below-ground, ceremonies are common place in many ancient cultures, as is the idea of rebirth, and the idea of circular ceremonial centers, honoring the dead, expectations of seeing the dead when we die. Also the Biblical “Sun God.“ There must be some common background, or a point of common origin that was, somehow, later dispersed throughout the world, and became a part of the many cultures of the world; which yet remain in our cultures as very stubborn, religious symbolisms.