A fire burns, whether it knows or not, or whether it wants to or not. The people around it see it, they are changed by it, and it testifies of the truth. What if the truth that came down on Mount Sinai, that ferocious fire, lived in you?
God wants to do miracles through you, even if you feel unworthy. Has He not forgiven, has He not delivered, is He not able? Feeling unworthy leaves you in good company with Moses and countless others, but it also means God gets the glory. When are we going to start believing He wants to change multitudes through the course of our lives, like He changed multitudes in one day at Mount Sinai?