In Exodus 3, verses 1 -6, God speaks to Moses from a bush that burned but did not burn up!  Moses is one of the most remarkable characters in the Bible.  His life can be divided into periods of forty years each.  The first forty years were characterized by favor; the second by failure and the third by fulfillment.  Like us, Moses made mistakes and missed the mark more than once but, when we look at the broad expanse of his life, his failure was book-ended by favor and fulfillment.  In other words, his failures were not final nor are ours.