Although we don't believe God has a form, His presence at Sinai is described as a "consuming fire" (Exodus 24:17). But aren't all fires, by very definition, consuming? What, then, is the Torah emphasizing with the additional word?
Rabbi Y. T. Mecklenburg (1785-1865) comments, although all fires require fuel, the colour and temperature of the flame is determined by the combustion quality of the fuel.
We were all at Sinai. Yet, the experience wasn't the same for everyone. It was dependent on the "combustion quality" of our character and readiness. Despite the face-to-face encounter with the Almighty, those who arrived with a tainted attitude were not highly impacted. Ultimately, we cannot expect any other person, even the Ultimate Being, to "light our fire." We need to kindle it ourselves. In the nnd, it all depends on our attitude and the quality of fuel we bring to the table.