Reverence is "a feeling or attitude of deep respect tinged with awe; veneration". Reverence involves a humbling of the self in respectful recognition of something perceived to be greater than the self.
The word "reverence" is often used in relationship with religion. This is because religion often stimulates this emotion through recognition of a god, the supernatural, and the ineffable. Like awe, it is an emotion in its own right, and can be felt outside of the realm of religion.